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Finding the Fourth Proportional to 18,375.71, 25,358.40 and 10,822.01

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Solution

The fourth proportional to 18,375.71, 25,358.40 and 10,822.01 is: 14,934.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.71 : 25,358.40 = 10,822.01 : x
  2. Step 2: Convert to fraction form
    18,375.71/25,358.40 = 10,822.01/x
  3. Step 3: Cross multiply
    18,375.71x = 25,358.40 × 10,822.01
  4. Step 4: Simplify right side
    18,375.71x = 274,428,731.59
  5. Step 5: Solve for x
    x = 274,428,731.59/18,375.71
  6. Step 6: Final answer
    x = 14,934.32

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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.