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Finding the Fourth Proportional to 60,916.76, 91,288.51 and 28,861.67

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Solution

The fourth proportional to 60,916.76, 91,288.51 and 28,861.67 is: 43,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,916.76 : 91,288.51 = 28,861.67 : x
  2. Step 2: Convert to fraction form
    60,916.76/91,288.51 = 28,861.67/x
  3. Step 3: Cross multiply
    60,916.76x = 91,288.51 × 28,861.67
  4. Step 4: Simplify right side
    60,916.76x = 2,634,738,490.61
  5. Step 5: Solve for x
    x = 2,634,738,490.61/60,916.76
  6. Step 6: Final answer
    x = 43,251.45

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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.