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Finding the Fourth Proportional to 124,470.90, 171,785.27 and 76,062.87

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Solution

The fourth proportional to 124,470.90, 171,785.27 and 76,062.87 is: 104,976.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,470.90 : 171,785.27 = 76,062.87 : x
  2. Step 2: Convert to fraction form
    124,470.90/171,785.27 = 76,062.87/x
  3. Step 3: Cross multiply
    124,470.90x = 171,785.27 × 76,062.87
  4. Step 4: Simplify right side
    124,470.90x = 13,066,480,850.08
  5. Step 5: Solve for x
    x = 13,066,480,850.08/124,470.90
  6. Step 6: Final answer
    x = 104,976.19

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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.