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Finding the Fourth Proportional to 124,600.40, 171,948.80 and 68,011.78

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Solution

The fourth proportional to 124,600.40, 171,948.80 and 68,011.78 is: 93,856.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,600.40 : 171,948.80 = 68,011.78 : x
  2. Step 2: Convert to fraction form
    124,600.40/171,948.80 = 68,011.78/x
  3. Step 3: Cross multiply
    124,600.40x = 171,948.80 × 68,011.78
  4. Step 4: Simplify right side
    124,600.40x = 11,694,543,956.86
  5. Step 5: Solve for x
    x = 11,694,543,956.86/124,600.40
  6. Step 6: Final answer
    x = 93,856.39

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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.