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Finding the Fourth Proportional to 921,847,867.80, 1,382,771,801.70 and 921,847,867.80

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Solution

The fourth proportional to 921,847,867.80, 1,382,771,801.70 and 921,847,867.80 is: 1,382,771,801.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,847,867.80 : 1,382,771,801.70 = 921,847,867.80 : x
  2. Step 2: Convert to fraction form
    921,847,867.80/1,382,771,801.70 = 921,847,867.80/x
  3. Step 3: Cross multiply
    921,847,867.80x = 1,382,771,801.70 × 921,847,867.80
  4. Step 4: Simplify right side
    921,847,867.80x = 1,274,705,237,051,109,376
  5. Step 5: Solve for x
    x = 1,274,705,237,051,109,376/921,847,867.80
  6. Step 6: Final answer
    x = 1,382,771,801.70

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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.