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Finding the Fourth Proportional to 921,699,009.60, 1,382,548,514.40 and 921,699,009.60

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Solution

The fourth proportional to 921,699,009.60, 1,382,548,514.40 and 921,699,009.60 is: 1,382,548,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,699,009.60 : 1,382,548,514.40 = 921,699,009.60 : x
  2. Step 2: Convert to fraction form
    921,699,009.60/1,382,548,514.40 = 921,699,009.60/x
  3. Step 3: Cross multiply
    921,699,009.60x = 1,382,548,514.40 × 921,699,009.60
  4. Step 4: Simplify right side
    921,699,009.60x = 1,274,293,596,446,431,488
  5. Step 5: Solve for x
    x = 1,274,293,596,446,431,488/921,699,009.60
  6. Step 6: Final answer
    x = 1,382,548,514.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.