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Finding the Fourth Proportional to 86,549.80, 129,824.70 and 44,559.40

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Solution

The fourth proportional to 86,549.80, 129,824.70 and 44,559.40 is: 66,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,549.80 : 129,824.70 = 44,559.40 : x
  2. Step 2: Convert to fraction form
    86,549.80/129,824.70 = 44,559.40/x
  3. Step 3: Cross multiply
    86,549.80x = 129,824.70 × 44,559.40
  4. Step 4: Simplify right side
    86,549.80x = 5,784,910,737.18
  5. Step 5: Solve for x
    x = 5,784,910,737.18/86,549.80
  6. Step 6: Final answer
    x = 66,839.10

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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.