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Finding the Fourth Proportional to 18,711.95, 25,822.52 and 10,328.45

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Solution

The fourth proportional to 18,711.95, 25,822.52 and 10,328.45 is: 14,253.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.95 : 25,822.52 = 10,328.45 : x
  2. Step 2: Convert to fraction form
    18,711.95/25,822.52 = 10,328.45/x
  3. Step 3: Cross multiply
    18,711.95x = 25,822.52 × 10,328.45
  4. Step 4: Simplify right side
    18,711.95x = 266,706,425.94
  5. Step 5: Solve for x
    x = 266,706,425.94/18,711.95
  6. Step 6: Final answer
    x = 14,253.27

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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.