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Finding the Fourth Proportional to 60,665.70, 90,998.55 and 34,421.70

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Solution

The fourth proportional to 60,665.70, 90,998.55 and 34,421.70 is: 51,632.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,665.70 : 90,998.55 = 34,421.70 : x
  2. Step 2: Convert to fraction form
    60,665.70/90,998.55 = 34,421.70/x
  3. Step 3: Cross multiply
    60,665.70x = 90,998.55 × 34,421.70
  4. Step 4: Simplify right side
    60,665.70x = 3,132,324,788.54
  5. Step 5: Solve for x
    x = 3,132,324,788.54/60,665.70
  6. Step 6: Final answer
    x = 51,632.55

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Similar ratio
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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.