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Finding the Fourth Proportional to 499,484,750.80, 749,227,126.20 and 491,832,000.40

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Solution

The fourth proportional to 499,484,750.80, 749,227,126.20 and 491,832,000.40 is: 737,748,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,484,750.80 : 749,227,126.20 = 491,832,000.40 : x
  2. Step 2: Convert to fraction form
    499,484,750.80/749,227,126.20 = 491,832,000.40/x
  3. Step 3: Cross multiply
    499,484,750.80x = 749,227,126.20 × 491,832,000.40
  4. Step 4: Simplify right side
    499,484,750.80x = 368,493,876,232,889,280
  5. Step 5: Solve for x
    x = 368,493,876,232,889,280/499,484,750.80
  6. Step 6: Final answer
    x = 737,748,000.60

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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.