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Finding the Fourth Proportional to 29,392.40, 40,561.60 and 15,963.88

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Solution

The fourth proportional to 29,392.40, 40,561.60 and 15,963.88 is: 22,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,392.40 : 40,561.60 = 15,963.88 : x
  2. Step 2: Convert to fraction form
    29,392.40/40,561.60 = 15,963.88/x
  3. Step 3: Cross multiply
    29,392.40x = 40,561.60 × 15,963.88
  4. Step 4: Simplify right side
    29,392.40x = 647,520,515.01
  5. Step 5: Solve for x
    x = 647,520,515.01/29,392.40
  6. Step 6: Final answer
    x = 22,030.20

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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.