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Finding the Fourth Proportional to 29,392.65, 40,561.70 and 15,963.80

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Solution

The fourth proportional to 29,392.65, 40,561.70 and 15,963.80 is: 22,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,392.65 : 40,561.70 = 15,963.80 : x
  2. Step 2: Convert to fraction form
    29,392.65/40,561.70 = 15,963.80/x
  3. Step 3: Cross multiply
    29,392.65x = 40,561.70 × 15,963.80
  4. Step 4: Simplify right side
    29,392.65x = 647,518,583.83
  5. Step 5: Solve for x
    x = 647,518,583.83/29,392.65
  6. Step 6: Final answer
    x = 22,029.95

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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.