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Finding the Fourth Proportional to 121,592.44, 182,452.88 and 86,281.93

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Solution

The fourth proportional to 121,592.44, 182,452.88 and 86,281.93 is: 129,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,592.44 : 182,452.88 = 86,281.93 : x
  2. Step 2: Convert to fraction form
    121,592.44/182,452.88 = 86,281.93/x
  3. Step 3: Cross multiply
    121,592.44x = 182,452.88 × 86,281.93
  4. Step 4: Simplify right side
    121,592.44x = 15,742,386,620.46
  5. Step 5: Solve for x
    x = 15,742,386,620.46/121,592.44
  6. Step 6: Final answer
    x = 129,468.47

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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.