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Finding the Fourth Proportional to 74,443,195.80, 111,664,793.70 and 38,039,487.30

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Solution

The fourth proportional to 74,443,195.80, 111,664,793.70 and 38,039,487.30 is: 57,059,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,443,195.80 : 111,664,793.70 = 38,039,487.30 : x
  2. Step 2: Convert to fraction form
    74,443,195.80/111,664,793.70 = 38,039,487.30/x
  3. Step 3: Cross multiply
    74,443,195.80x = 111,664,793.70 × 38,039,487.30
  4. Step 4: Simplify right side
    74,443,195.80x = 4,247,671,501,808,270
  5. Step 5: Solve for x
    x = 4,247,671,501,808,270/74,443,195.80
  6. Step 6: Final answer
    x = 57,059,230.95

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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.