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Finding the Fourth Proportional to 60,247.69, 90,372.45 and 15,878.95

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Solution

The fourth proportional to 60,247.69, 90,372.45 and 15,878.95 is: 23,818.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,247.69 : 90,372.45 = 15,878.95 : x
  2. Step 2: Convert to fraction form
    60,247.69/90,372.45 = 15,878.95/x
  3. Step 3: Cross multiply
    60,247.69x = 90,372.45 × 15,878.95
  4. Step 4: Simplify right side
    60,247.69x = 1,435,019,614.93
  5. Step 5: Solve for x
    x = 1,435,019,614.93/60,247.69
  6. Step 6: Final answer
    x = 23,818.67

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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.