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Finding the Fourth Proportional to 103,542.80, 155,335.80 and 59,133.20

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Solution

The fourth proportional to 103,542.80, 155,335.80 and 59,133.20 is: 88,712.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,542.80 : 155,335.80 = 59,133.20 : x
  2. Step 2: Convert to fraction form
    103,542.80/155,335.80 = 59,133.20/x
  3. Step 3: Cross multiply
    103,542.80x = 155,335.80 × 59,133.20
  4. Step 4: Simplify right side
    103,542.80x = 9,185,502,928.56
  5. Step 5: Solve for x
    x = 9,185,502,928.56/103,542.80
  6. Step 6: Final answer
    x = 88,712.14

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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.