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Finding the Fourth Proportional to 124,626.87, 186,612.26 and 74,588.31

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Solution

The fourth proportional to 124,626.87, 186,612.26 and 74,588.31 is: 111,686.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,626.87 : 186,612.26 = 74,588.31 : x
  2. Step 2: Convert to fraction form
    124,626.87/186,612.26 = 74,588.31/x
  3. Step 3: Cross multiply
    124,626.87x = 186,612.26 × 74,588.31
  4. Step 4: Simplify right side
    124,626.87x = 13,919,092,725.74
  5. Step 5: Solve for x
    x = 13,919,092,725.74/124,626.87
  6. Step 6: Final answer
    x = 111,686.13

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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.