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Finding the Fourth Proportional to 18,449.70, 25,458.42 and 10,490.23

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Solution

The fourth proportional to 18,449.70, 25,458.42 and 10,490.23 is: 14,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.70 : 25,458.42 = 10,490.23 : x
  2. Step 2: Convert to fraction form
    18,449.70/25,458.42 = 10,490.23/x
  3. Step 3: Cross multiply
    18,449.70x = 25,458.42 × 10,490.23
  4. Step 4: Simplify right side
    18,449.70x = 267,064,681.24
  5. Step 5: Solve for x
    x = 267,064,681.24/18,449.70
  6. Step 6: Final answer
    x = 14,475.29

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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.