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Finding the Fourth Proportional to 807,914, 1,114,915.20 and 445,337.84

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Solution

The fourth proportional to 807,914, 1,114,915.20 and 445,337.84 is: 614,562.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,914 : 1,114,915.20 = 445,337.84 : x
  2. Step 2: Convert to fraction form
    807,914/1,114,915.20 = 445,337.84/x
  3. Step 3: Cross multiply
    807,914x = 1,114,915.20 × 445,337.84
  4. Step 4: Simplify right side
    807,914x = 496,513,926,951.17
  5. Step 5: Solve for x
    x = 496,513,926,951.17/807,914
  6. Step 6: Final answer
    x = 614,562.85

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1.5x scale

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.