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Finding the Fourth Proportional to 15,126.54, 22,668.99 and 7,715.39

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Solution

The fourth proportional to 15,126.54, 22,668.99 and 7,715.39 is: 11,562.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.54 : 22,668.99 = 7,715.39 : x
  2. Step 2: Convert to fraction form
    15,126.54/22,668.99 = 7,715.39/x
  3. Step 3: Cross multiply
    15,126.54x = 22,668.99 × 7,715.39
  4. Step 4: Simplify right side
    15,126.54x = 174,900,098.76
  5. Step 5: Solve for x
    x = 174,900,098.76/15,126.54
  6. Step 6: Final answer
    x = 11,562.47

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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.