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Finding the Fourth Proportional to 83,612.70, 125,224.65 and 57,174.30

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Solution

The fourth proportional to 83,612.70, 125,224.65 and 57,174.30 is: 85,628.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,612.70 : 125,224.65 = 57,174.30 : x
  2. Step 2: Convert to fraction form
    83,612.70/125,224.65 = 57,174.30/x
  3. Step 3: Cross multiply
    83,612.70x = 125,224.65 × 57,174.30
  4. Step 4: Simplify right side
    83,612.70x = 7,159,631,706.50
  5. Step 5: Solve for x
    x = 7,159,631,706.50/83,612.70
  6. Step 6: Final answer
    x = 85,628.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.