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Finding the Fourth Proportional to 10,572.70, 14,600.12 and 7,915.49

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Solution

The fourth proportional to 10,572.70, 14,600.12 and 7,915.49 is: 10,930.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,572.70 : 14,600.12 = 7,915.49 : x
  2. Step 2: Convert to fraction form
    10,572.70/14,600.12 = 7,915.49/x
  3. Step 3: Cross multiply
    10,572.70x = 14,600.12 × 7,915.49
  4. Step 4: Simplify right side
    10,572.70x = 115,567,103.86
  5. Step 5: Solve for x
    x = 115,567,103.86/10,572.70
  6. Step 6: Final answer
    x = 10,930.71

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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.