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Finding the Fourth Proportional to 15,143.67, 22,715.55 and 5,909.67

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Solution

The fourth proportional to 15,143.67, 22,715.55 and 5,909.67 is: 8,864.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.67 : 22,715.55 = 5,909.67 : x
  2. Step 2: Convert to fraction form
    15,143.67/22,715.55 = 5,909.67/x
  3. Step 3: Cross multiply
    15,143.67x = 22,715.55 × 5,909.67
  4. Step 4: Simplify right side
    15,143.67x = 134,241,404.37
  5. Step 5: Solve for x
    x = 134,241,404.37/15,143.67
  6. Step 6: Final answer
    x = 8,864.52

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Similar ratio
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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.