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Finding the Fourth Proportional to 74,668,322.70, 112,002,484.05 and 67,015,572.30

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Solution

The fourth proportional to 74,668,322.70, 112,002,484.05 and 67,015,572.30 is: 100,523,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,668,322.70 : 112,002,484.05 = 67,015,572.30 : x
  2. Step 2: Convert to fraction form
    74,668,322.70/112,002,484.05 = 67,015,572.30/x
  3. Step 3: Cross multiply
    74,668,322.70x = 112,002,484.05 × 67,015,572.30
  4. Step 4: Simplify right side
    74,668,322.70x = 7,505,910,567,632,371
  5. Step 5: Solve for x
    x = 7,505,910,567,632,371/74,668,322.70
  6. Step 6: Final answer
    x = 100,523,358.45

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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.