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Finding the Fourth Proportional to 86,818.41, 129,872.36 and 65,600.73

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Solution

The fourth proportional to 86,818.41, 129,872.36 and 65,600.73 is: 98,132.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,818.41 : 129,872.36 = 65,600.73 : x
  2. Step 2: Convert to fraction form
    86,818.41/129,872.36 = 65,600.73/x
  3. Step 3: Cross multiply
    86,818.41x = 129,872.36 × 65,600.73
  4. Step 4: Simplify right side
    86,818.41x = 8,519,721,294.82
  5. Step 5: Solve for x
    x = 8,519,721,294.82/86,818.41
  6. Step 6: Final answer
    x = 98,132.66

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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.