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Finding the Fourth Proportional to 59,890.80, 89,836.20 and 53,439.60

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Solution

The fourth proportional to 59,890.80, 89,836.20 and 53,439.60 is: 80,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,890.80 : 89,836.20 = 53,439.60 : x
  2. Step 2: Convert to fraction form
    59,890.80/89,836.20 = 53,439.60/x
  3. Step 3: Cross multiply
    59,890.80x = 89,836.20 × 53,439.60
  4. Step 4: Simplify right side
    59,890.80x = 4,800,810,593.52
  5. Step 5: Solve for x
    x = 4,800,810,593.52/59,890.80
  6. Step 6: Final answer
    x = 80,159.40

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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.