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Finding the Fourth Proportional to 39,900.86, 59,850.92 and 15,276.86

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Solution

The fourth proportional to 39,900.86, 59,850.92 and 15,276.86 is: 22,915.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900.86 : 59,850.92 = 15,276.86 : x
  2. Step 2: Convert to fraction form
    39,900.86/59,850.92 = 15,276.86/x
  3. Step 3: Cross multiply
    39,900.86x = 59,850.92 × 15,276.86
  4. Step 4: Simplify right side
    39,900.86x = 914,334,125.71
  5. Step 5: Solve for x
    x = 914,334,125.71/39,900.86
  6. Step 6: Final answer
    x = 22,915.15

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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.