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Finding the Fourth Proportional to 12,505.76, 17,254.24 and 7,200.44

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Solution

The fourth proportional to 12,505.76, 17,254.24 and 7,200.44 is: 9,934.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.76 : 17,254.24 = 7,200.44 : x
  2. Step 2: Convert to fraction form
    12,505.76/17,254.24 = 7,200.44/x
  3. Step 3: Cross multiply
    12,505.76x = 17,254.24 × 7,200.44
  4. Step 4: Simplify right side
    12,505.76x = 124,238,119.87
  5. Step 5: Solve for x
    x = 124,238,119.87/12,505.76
  6. Step 6: Final answer
    x = 9,934.47

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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.