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Finding the Fourth Proportional to 8,715.57, 12,025.54 and 4,938.41

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Solution

The fourth proportional to 8,715.57, 12,025.54 and 4,938.41 is: 6,813.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.57 : 12,025.54 = 4,938.41 : x
  2. Step 2: Convert to fraction form
    8,715.57/12,025.54 = 4,938.41/x
  3. Step 3: Cross multiply
    8,715.57x = 12,025.54 × 4,938.41
  4. Step 4: Simplify right side
    8,715.57x = 59,387,046.99
  5. Step 5: Solve for x
    x = 59,387,046.99/8,715.57
  6. Step 6: Final answer
    x = 6,813.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.