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Finding the Fourth Proportional to 125,648.88, 173,386.35 and 74,659.38

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Solution

The fourth proportional to 125,648.88, 173,386.35 and 74,659.38 is: 103,024.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,648.88 : 173,386.35 = 74,659.38 : x
  2. Step 2: Convert to fraction form
    125,648.88/173,386.35 = 74,659.38/x
  3. Step 3: Cross multiply
    125,648.88x = 173,386.35 × 74,659.38
  4. Step 4: Simplify right side
    125,648.88x = 12,944,917,391.46
  5. Step 5: Solve for x
    x = 12,944,917,391.46/125,648.88
  6. Step 6: Final answer
    x = 103,024.53

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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.