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Finding the Fourth Proportional to 7,255.40, 10,895.87 and 7,151.52

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Solution

The fourth proportional to 7,255.40, 10,895.87 and 7,151.52 is: 10,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,255.40 : 10,895.87 = 7,151.52 : x
  2. Step 2: Convert to fraction form
    7,255.40/10,895.87 = 7,151.52/x
  3. Step 3: Cross multiply
    7,255.40x = 10,895.87 × 7,151.52
  4. Step 4: Simplify right side
    7,255.40x = 77,921,996.46
  5. Step 5: Solve for x
    x = 77,921,996.46/7,255.40
  6. Step 6: Final answer
    x = 10,739.86

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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.