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Finding the Fourth Proportional to 313,031,663.20, 437,670,372.20 and 313,031,663.20

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Solution

The fourth proportional to 313,031,663.20, 437,670,372.20 and 313,031,663.20 is: 437,670,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,031,663.20 : 437,670,372.20 = 313,031,663.20 : x
  2. Step 2: Convert to fraction form
    313,031,663.20/437,670,372.20 = 313,031,663.20/x
  3. Step 3: Cross multiply
    313,031,663.20x = 437,670,372.20 × 313,031,663.20
  4. Step 4: Simplify right side
    313,031,663.20x = 137,004,684,543,129,040
  5. Step 5: Solve for x
    x = 137,004,684,543,129,040/313,031,663.20
  6. Step 6: Final answer
    x = 437,670,372.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.