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Finding the Fourth Proportional to 60,081.66, 90,166.83 and 28,491.83

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Solution

The fourth proportional to 60,081.66, 90,166.83 and 28,491.83 is: 42,758.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,081.66 : 90,166.83 = 28,491.83 : x
  2. Step 2: Convert to fraction form
    60,081.66/90,166.83 = 28,491.83/x
  3. Step 3: Cross multiply
    60,081.66x = 90,166.83 × 28,491.83
  4. Step 4: Simplify right side
    60,081.66x = 2,569,017,541.16
  5. Step 5: Solve for x
    x = 2,569,017,541.16/60,081.66
  6. Step 6: Final answer
    x = 42,758.76

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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.