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Finding the Fourth Proportional to 235,685.44, 353,318.56 and 85,897.52

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Solution

The fourth proportional to 235,685.44, 353,318.56 and 85,897.52 is: 128,769.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,685.44 : 353,318.56 = 85,897.52 : x
  2. Step 2: Convert to fraction form
    235,685.44/353,318.56 = 85,897.52/x
  3. Step 3: Cross multiply
    235,685.44x = 353,318.56 × 85,897.52
  4. Step 4: Simplify right side
    235,685.44x = 30,349,188,073.97
  5. Step 5: Solve for x
    x = 30,349,188,073.97/235,685.44
  6. Step 6: Final answer
    x = 128,769.89

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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.