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Finding the Fourth Proportional to 86,019.97, 129,048.39 and 29,861.86

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Solution

The fourth proportional to 86,019.97, 129,048.39 and 29,861.86 is: 44,799.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.97 : 129,048.39 = 29,861.86 : x
  2. Step 2: Convert to fraction form
    86,019.97/129,048.39 = 29,861.86/x
  3. Step 3: Cross multiply
    86,019.97x = 129,048.39 × 29,861.86
  4. Step 4: Simplify right side
    86,019.97x = 3,853,624,955.41
  5. Step 5: Solve for x
    x = 3,853,624,955.41/86,019.97
  6. Step 6: Final answer
    x = 44,799.19

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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.