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Finding the Fourth Proportional to 124,107.16, 171,303.96 and 81,092.96

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Solution

The fourth proportional to 124,107.16, 171,303.96 and 81,092.96 is: 111,931.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,107.16 : 171,303.96 = 81,092.96 : x
  2. Step 2: Convert to fraction form
    124,107.16/171,303.96 = 81,092.96/x
  3. Step 3: Cross multiply
    124,107.16x = 171,303.96 × 81,092.96
  4. Step 4: Simplify right side
    124,107.16x = 13,891,545,176.12
  5. Step 5: Solve for x
    x = 13,891,545,176.12/124,107.16
  6. Step 6: Final answer
    x = 111,931.86

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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.