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Finding the Fourth Proportional to 18,855.84, 26,020.92 and 10,472.40

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Solution

The fourth proportional to 18,855.84, 26,020.92 and 10,472.40 is: 14,451.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.84 : 26,020.92 = 10,472.40 : x
  2. Step 2: Convert to fraction form
    18,855.84/26,020.92 = 10,472.40/x
  3. Step 3: Cross multiply
    18,855.84x = 26,020.92 × 10,472.40
  4. Step 4: Simplify right side
    18,855.84x = 272,501,482.61
  5. Step 5: Solve for x
    x = 272,501,482.61/18,855.84
  6. Step 6: Final answer
    x = 14,451.83

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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.