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Finding the Fourth Proportional to 151,335.46, 208,835.46 and 87,693.76

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Solution

The fourth proportional to 151,335.46, 208,835.46 and 87,693.76 is: 121,013.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,335.46 : 208,835.46 = 87,693.76 : x
  2. Step 2: Convert to fraction form
    151,335.46/208,835.46 = 87,693.76/x
  3. Step 3: Cross multiply
    151,335.46x = 208,835.46 × 87,693.76
  4. Step 4: Simplify right side
    151,335.46x = 18,313,566,708.73
  5. Step 5: Solve for x
    x = 18,313,566,708.73/151,335.46
  6. Step 6: Final answer
    x = 121,013.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.