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Finding the Fourth Proportional to 11,061.46, 15,253.95 and 9,387.46

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Solution

The fourth proportional to 11,061.46, 15,253.95 and 9,387.46 is: 12,945.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,061.46 : 15,253.95 = 9,387.46 : x
  2. Step 2: Convert to fraction form
    11,061.46/15,253.95 = 9,387.46/x
  3. Step 3: Cross multiply
    11,061.46x = 15,253.95 × 9,387.46
  4. Step 4: Simplify right side
    11,061.46x = 143,195,845.47
  5. Step 5: Solve for x
    x = 143,195,845.47/11,061.46
  6. Step 6: Final answer
    x = 12,945.47

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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.