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Finding the Fourth Proportional to 96,557.91, 144,847.80 and 86,636.22

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Solution

The fourth proportional to 96,557.91, 144,847.80 and 86,636.22 is: 129,964.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,557.91 : 144,847.80 = 86,636.22 : x
  2. Step 2: Convert to fraction form
    96,557.91/144,847.80 = 86,636.22/x
  3. Step 3: Cross multiply
    96,557.91x = 144,847.80 × 86,636.22
  4. Step 4: Simplify right side
    96,557.91x = 12,549,065,867.32
  5. Step 5: Solve for x
    x = 12,549,065,867.32/96,557.91
  6. Step 6: Final answer
    x = 129,964.14

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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.