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Finding the Fourth Proportional to 125,376.32, 173,019.48 and 68,787.92

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Solution

The fourth proportional to 125,376.32, 173,019.48 and 68,787.92 is: 94,927.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,376.32 : 173,019.48 = 68,787.92 : x
  2. Step 2: Convert to fraction form
    125,376.32/173,019.48 = 68,787.92/x
  3. Step 3: Cross multiply
    125,376.32x = 173,019.48 × 68,787.92
  4. Step 4: Simplify right side
    125,376.32x = 11,901,650,148.68
  5. Step 5: Solve for x
    x = 11,901,650,148.68/125,376.32
  6. Step 6: Final answer
    x = 94,927.42

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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.