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Finding the Fourth Proportional to 86,672.91, 119,606.34 and 48,432.78

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Solution

The fourth proportional to 86,672.91, 119,606.34 and 48,432.78 is: 66,835.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,672.91 : 119,606.34 = 48,432.78 : x
  2. Step 2: Convert to fraction form
    86,672.91/119,606.34 = 48,432.78/x
  3. Step 3: Cross multiply
    86,672.91x = 119,606.34 × 48,432.78
  4. Step 4: Simplify right side
    86,672.91x = 5,792,867,551.83
  5. Step 5: Solve for x
    x = 5,792,867,551.83/86,672.91
  6. Step 6: Final answer
    x = 66,835.96

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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.