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Finding the Fourth Proportional to 82,866.60, 124,299.90 and 59,711.40

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Solution

The fourth proportional to 82,866.60, 124,299.90 and 59,711.40 is: 89,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,866.60 : 124,299.90 = 59,711.40 : x
  2. Step 2: Convert to fraction form
    82,866.60/124,299.90 = 59,711.40/x
  3. Step 3: Cross multiply
    82,866.60x = 124,299.90 × 59,711.40
  4. Step 4: Simplify right side
    82,866.60x = 7,422,121,048.86
  5. Step 5: Solve for x
    x = 7,422,121,048.86/82,866.60
  6. Step 6: Final answer
    x = 89,567.10

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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.