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Finding the Fourth Proportional to 18,124.74, 25,008.67 and 10,953.20

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Solution

The fourth proportional to 18,124.74, 25,008.67 and 10,953.20 is: 15,113.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,124.74 : 25,008.67 = 10,953.20 : x
  2. Step 2: Convert to fraction form
    18,124.74/25,008.67 = 10,953.20/x
  3. Step 3: Cross multiply
    18,124.74x = 25,008.67 × 10,953.20
  4. Step 4: Simplify right side
    18,124.74x = 273,924,964.24
  5. Step 5: Solve for x
    x = 273,924,964.24/18,124.74
  6. Step 6: Final answer
    x = 15,113.32

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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.