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Finding the Fourth Proportional to 99,218.52, 136,957.50 and 65,695.32

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Solution

The fourth proportional to 99,218.52, 136,957.50 and 65,695.32 is: 90,683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,218.52 : 136,957.50 = 65,695.32 : x
  2. Step 2: Convert to fraction form
    99,218.52/136,957.50 = 65,695.32/x
  3. Step 3: Cross multiply
    99,218.52x = 136,957.50 × 65,695.32
  4. Step 4: Simplify right side
    99,218.52x = 8,997,466,788.90
  5. Step 5: Solve for x
    x = 8,997,466,788.90/99,218.52
  6. Step 6: Final answer
    x = 90,683.34

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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.