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Finding the Fourth Proportional to 124,725.84, 187,117.98 and 85,301.52

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Solution

The fourth proportional to 124,725.84, 187,117.98 and 85,301.52 is: 127,972.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,725.84 : 187,117.98 = 85,301.52 : x
  2. Step 2: Convert to fraction form
    124,725.84/187,117.98 = 85,301.52/x
  3. Step 3: Cross multiply
    124,725.84x = 187,117.98 × 85,301.52
  4. Step 4: Simplify right side
    124,725.84x = 15,961,448,113.33
  5. Step 5: Solve for x
    x = 15,961,448,113.33/124,725.84
  6. Step 6: Final answer
    x = 127,972.26

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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.