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Finding the Fourth Proportional to 118,007.46, 176,972.92 and 39,100.50

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Solution

The fourth proportional to 118,007.46, 176,972.92 and 39,100.50 is: 58,638.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,007.46 : 176,972.92 = 39,100.50 : x
  2. Step 2: Convert to fraction form
    118,007.46/176,972.92 = 39,100.50/x
  3. Step 3: Cross multiply
    118,007.46x = 176,972.92 × 39,100.50
  4. Step 4: Simplify right side
    118,007.46x = 6,919,729,560.71
  5. Step 5: Solve for x
    x = 6,919,729,560.71/118,007.46
  6. Step 6: Final answer
    x = 58,638.07

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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.