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Finding the Fourth Proportional to 359,935,997.80, 539,903,996.70 and 237,491,991.40

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Solution

The fourth proportional to 359,935,997.80, 539,903,996.70 and 237,491,991.40 is: 356,237,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,935,997.80 : 539,903,996.70 = 237,491,991.40 : x
  2. Step 2: Convert to fraction form
    359,935,997.80/539,903,996.70 = 237,491,991.40/x
  3. Step 3: Cross multiply
    359,935,997.80x = 539,903,996.70 × 237,491,991.40
  4. Step 4: Simplify right side
    359,935,997.80x = 128,222,875,341,102,048
  5. Step 5: Solve for x
    x = 128,222,875,341,102,048/359,935,997.80
  6. Step 6: Final answer
    x = 356,237,987.10

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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.