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Finding the Fourth Proportional to 15,728.74, 23,591.43 and 9,867.94

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Solution

The fourth proportional to 15,728.74, 23,591.43 and 9,867.94 is: 14,800.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.74 : 23,591.43 = 9,867.94 : x
  2. Step 2: Convert to fraction form
    15,728.74/23,591.43 = 9,867.94/x
  3. Step 3: Cross multiply
    15,728.74x = 23,591.43 × 9,867.94
  4. Step 4: Simplify right side
    15,728.74x = 232,798,815.75
  5. Step 5: Solve for x
    x = 232,798,815.75/15,728.74
  6. Step 6: Final answer
    x = 14,800.86

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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.