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Finding the Fourth Proportional to 125,705.50, 173,474.40 and 69,118.90

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Solution

The fourth proportional to 125,705.50, 173,474.40 and 69,118.90 is: 95,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,705.50 : 173,474.40 = 69,118.90 : x
  2. Step 2: Convert to fraction form
    125,705.50/173,474.40 = 69,118.90/x
  3. Step 3: Cross multiply
    125,705.50x = 173,474.40 × 69,118.90
  4. Step 4: Simplify right side
    125,705.50x = 11,990,359,706.16
  5. Step 5: Solve for x
    x = 11,990,359,706.16/125,705.50
  6. Step 6: Final answer
    x = 95,384.53

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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.