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Finding the Fourth Proportional to 18,624.08, 27,931.80 and 5,472.92

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Solution

The fourth proportional to 18,624.08, 27,931.80 and 5,472.92 is: 8,208.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.08 : 27,931.80 = 5,472.92 : x
  2. Step 2: Convert to fraction form
    18,624.08/27,931.80 = 5,472.92/x
  3. Step 3: Cross multiply
    18,624.08x = 27,931.80 × 5,472.92
  4. Step 4: Simplify right side
    18,624.08x = 152,868,506.86
  5. Step 5: Solve for x
    x = 152,868,506.86/18,624.08
  6. Step 6: Final answer
    x = 8,208.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.