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Finding the Fourth Proportional to 18,362.92, 25,387.14 and 13,575.32

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Solution

The fourth proportional to 18,362.92, 25,387.14 and 13,575.32 is: 18,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362.92 : 25,387.14 = 13,575.32 : x
  2. Step 2: Convert to fraction form
    18,362.92/25,387.14 = 13,575.32/x
  3. Step 3: Cross multiply
    18,362.92x = 25,387.14 × 13,575.32
  4. Step 4: Simplify right side
    18,362.92x = 344,638,549.38
  5. Step 5: Solve for x
    x = 344,638,549.38/18,362.92
  6. Step 6: Final answer
    x = 18,768.18

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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.