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Finding the Fourth Proportional to 25,335.92, 34,976.04 and 15,909.68

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Solution

The fourth proportional to 25,335.92, 34,976.04 and 15,909.68 is: 21,963.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,335.92 : 34,976.04 = 15,909.68 : x
  2. Step 2: Convert to fraction form
    25,335.92/34,976.04 = 15,909.68/x
  3. Step 3: Cross multiply
    25,335.92x = 34,976.04 × 15,909.68
  4. Step 4: Simplify right side
    25,335.92x = 556,457,604.07
  5. Step 5: Solve for x
    x = 556,457,604.07/25,335.92
  6. Step 6: Final answer
    x = 21,963.19

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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.