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Finding the Fourth Proportional to 107,613.70, 161,420.55 and 88,586.80

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Solution

The fourth proportional to 107,613.70, 161,420.55 and 88,586.80 is: 132,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,613.70 : 161,420.55 = 88,586.80 : x
  2. Step 2: Convert to fraction form
    107,613.70/161,420.55 = 88,586.80/x
  3. Step 3: Cross multiply
    107,613.70x = 161,420.55 × 88,586.80
  4. Step 4: Simplify right side
    107,613.70x = 14,299,729,978.74
  5. Step 5: Solve for x
    x = 14,299,729,978.74/107,613.70
  6. Step 6: Final answer
    x = 132,880.20

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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.