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Finding the Fourth Proportional to 125,705.79, 173,469.60 and 69,116.76

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Solution

The fourth proportional to 125,705.79, 173,469.60 and 69,116.76 is: 95,378.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,705.79 : 173,469.60 = 69,116.76 : x
  2. Step 2: Convert to fraction form
    125,705.79/173,469.60 = 69,116.76/x
  3. Step 3: Cross multiply
    125,705.79x = 173,469.60 × 69,116.76
  4. Step 4: Simplify right side
    125,705.79x = 11,989,656,710.50
  5. Step 5: Solve for x
    x = 11,989,656,710.50/125,705.79
  6. Step 6: Final answer
    x = 95,378.71

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1.5x scale

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.