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Finding the Fourth Proportional to 799,904,311.65, 1,103,869,570.47 and 447,486,187.62

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Solution

The fourth proportional to 799,904,311.65, 1,103,869,570.47 and 447,486,187.62 is: 617,531,845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    799,904,311.65 : 1,103,869,570.47 = 447,486,187.62 : x
  2. Step 2: Convert to fraction form
    799,904,311.65/1,103,869,570.47 = 447,486,187.62/x
  3. Step 3: Cross multiply
    799,904,311.65x = 1,103,869,570.47 × 447,486,187.62
  4. Step 4: Simplify right side
    799,904,311.65x = 493,966,385,719,347,264
  5. Step 5: Solve for x
    x = 493,966,385,719,347,264/799,904,311.65
  6. Step 6: Final answer
    x = 617,531,845.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.