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Finding the Fourth Proportional to 235,359.48, 352,928.28 and 85,494.12

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Solution

The fourth proportional to 235,359.48, 352,928.28 and 85,494.12 is: 128,200.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,359.48 : 352,928.28 = 85,494.12 : x
  2. Step 2: Convert to fraction form
    235,359.48/352,928.28 = 85,494.12/x
  3. Step 3: Cross multiply
    235,359.48x = 352,928.28 × 85,494.12
  4. Step 4: Simplify right side
    235,359.48x = 30,173,292,721.71
  5. Step 5: Solve for x
    x = 30,173,292,721.71/235,359.48
  6. Step 6: Final answer
    x = 128,200.88

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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.