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Finding the Fourth Proportional to 124,585.32, 171,947.43 and 79,216.01

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Solution

The fourth proportional to 124,585.32, 171,947.43 and 79,216.01 is: 109,330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,585.32 : 171,947.43 = 79,216.01 : x
  2. Step 2: Convert to fraction form
    124,585.32/171,947.43 = 79,216.01/x
  3. Step 3: Cross multiply
    124,585.32x = 171,947.43 × 79,216.01
  4. Step 4: Simplify right side
    124,585.32x = 13,620,988,474.62
  5. Step 5: Solve for x
    x = 13,620,988,474.62/124,585.32
  6. Step 6: Final answer
    x = 109,330.61

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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.