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Finding the Fourth Proportional to 25,438.80, 35,122.92 and 15,893.22

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Solution

The fourth proportional to 25,438.80, 35,122.92 and 15,893.22 is: 21,943.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,438.80 : 35,122.92 = 15,893.22 : x
  2. Step 2: Convert to fraction form
    25,438.80/35,122.92 = 15,893.22/x
  3. Step 3: Cross multiply
    25,438.80x = 35,122.92 × 15,893.22
  4. Step 4: Simplify right side
    25,438.80x = 558,216,294.60
  5. Step 5: Solve for x
    x = 558,216,294.60/25,438.80
  6. Step 6: Final answer
    x = 21,943.50

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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.