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Finding the Fourth Proportional to 60,801.80, 91,202.70 and 42,102.95

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Solution

The fourth proportional to 60,801.80, 91,202.70 and 42,102.95 is: 63,154.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,801.80 : 91,202.70 = 42,102.95 : x
  2. Step 2: Convert to fraction form
    60,801.80/91,202.70 = 42,102.95/x
  3. Step 3: Cross multiply
    60,801.80x = 91,202.70 × 42,102.95
  4. Step 4: Simplify right side
    60,801.80x = 3,839,902,717.97
  5. Step 5: Solve for x
    x = 3,839,902,717.97/60,801.80
  6. Step 6: Final answer
    x = 63,154.43

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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.