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Finding the Fourth Proportional to 6,387,514.20, 9,581,271.30 and 6,387,514.20

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Solution

The fourth proportional to 6,387,514.20, 9,581,271.30 and 6,387,514.20 is: 9,581,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387,514.20 : 9,581,271.30 = 6,387,514.20 : x
  2. Step 2: Convert to fraction form
    6,387,514.20/9,581,271.30 = 6,387,514.20/x
  3. Step 3: Cross multiply
    6,387,514.20x = 9,581,271.30 × 6,387,514.20
  4. Step 4: Simplify right side
    6,387,514.20x = 61,200,506,482,802.47
  5. Step 5: Solve for x
    x = 61,200,506,482,802.47/6,387,514.20
  6. Step 6: Final answer
    x = 9,581,271.30

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Double scale
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Similar ratio
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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.