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Finding the Fourth Proportional to 18,747.84, 25,870.08 and 11,675.04

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Solution

The fourth proportional to 18,747.84, 25,870.08 and 11,675.04 is: 16,110.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.84 : 25,870.08 = 11,675.04 : x
  2. Step 2: Convert to fraction form
    18,747.84/25,870.08 = 11,675.04/x
  3. Step 3: Cross multiply
    18,747.84x = 25,870.08 × 11,675.04
  4. Step 4: Simplify right side
    18,747.84x = 302,034,218.80
  5. Step 5: Solve for x
    x = 302,034,218.80/18,747.84
  6. Step 6: Final answer
    x = 16,110.35

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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.