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Finding the Fourth Proportional to 135,565.52, 203,266.20 and 60,671.72

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Solution

The fourth proportional to 135,565.52, 203,266.20 and 60,671.72 is: 90,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,565.52 : 203,266.20 = 60,671.72 : x
  2. Step 2: Convert to fraction form
    135,565.52/203,266.20 = 60,671.72/x
  3. Step 3: Cross multiply
    135,565.52x = 203,266.20 × 60,671.72
  4. Step 4: Simplify right side
    135,565.52x = 12,332,509,971.86
  5. Step 5: Solve for x
    x = 12,332,509,971.86/135,565.52
  6. Step 6: Final answer
    x = 90,970.85

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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.