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Finding the Fourth Proportional to 10,092.70, 15,139.05 and 5,718.70

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Solution

The fourth proportional to 10,092.70, 15,139.05 and 5,718.70 is: 8,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,092.70 : 15,139.05 = 5,718.70 : x
  2. Step 2: Convert to fraction form
    10,092.70/15,139.05 = 5,718.70/x
  3. Step 3: Cross multiply
    10,092.70x = 15,139.05 × 5,718.70
  4. Step 4: Simplify right side
    10,092.70x = 86,575,685.24
  5. Step 5: Solve for x
    x = 86,575,685.24/10,092.70
  6. Step 6: Final answer
    x = 8,578.05

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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.