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Finding the Fourth Proportional to 18,712.32, 25,823.03 and 10,328.82

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Solution

The fourth proportional to 18,712.32, 25,823.03 and 10,328.82 is: 14,253.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.32 : 25,823.03 = 10,328.82 : x
  2. Step 2: Convert to fraction form
    18,712.32/25,823.03 = 10,328.82/x
  3. Step 3: Cross multiply
    18,712.32x = 25,823.03 × 10,328.82
  4. Step 4: Simplify right side
    18,712.32x = 266,721,428.72
  5. Step 5: Solve for x
    x = 266,721,428.72/18,712.32
  6. Step 6: Final answer
    x = 14,253.79

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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.