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Finding the Fourth Proportional to 125,426.46, 173,060.06 and 71,702.80

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Solution

The fourth proportional to 125,426.46, 173,060.06 and 71,702.80 is: 98,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,426.46 : 173,060.06 = 71,702.80 : x
  2. Step 2: Convert to fraction form
    125,426.46/173,060.06 = 71,702.80/x
  3. Step 3: Cross multiply
    125,426.46x = 173,060.06 × 71,702.80
  4. Step 4: Simplify right side
    125,426.46x = 12,408,890,870.17
  5. Step 5: Solve for x
    x = 12,408,890,870.17/125,426.46
  6. Step 6: Final answer
    x = 98,933.60

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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.