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Finding the Fourth Proportional to 18,358.92, 25,341.12 and 13,323.96

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Solution

The fourth proportional to 18,358.92, 25,341.12 and 13,323.96 is: 18,391.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.92 : 25,341.12 = 13,323.96 : x
  2. Step 2: Convert to fraction form
    18,358.92/25,341.12 = 13,323.96/x
  3. Step 3: Cross multiply
    18,358.92x = 25,341.12 × 13,323.96
  4. Step 4: Simplify right side
    18,358.92x = 337,644,069.24
  5. Step 5: Solve for x
    x = 337,644,069.24/18,358.92
  6. Step 6: Final answer
    x = 18,391.28

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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.