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Finding the Fourth Proportional to 18,562.92, 25,617.12 and 10,065.20

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Solution

The fourth proportional to 18,562.92, 25,617.12 and 10,065.20 is: 13,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,562.92 : 25,617.12 = 10,065.20 : x
  2. Step 2: Convert to fraction form
    18,562.92/25,617.12 = 10,065.20/x
  3. Step 3: Cross multiply
    18,562.92x = 25,617.12 × 10,065.20
  4. Step 4: Simplify right side
    18,562.92x = 257,841,436.22
  5. Step 5: Solve for x
    x = 257,841,436.22/18,562.92
  6. Step 6: Final answer
    x = 13,890.13

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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.