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Finding the Fourth Proportional to 58,470.91, 80,689.84 and 31,613.41

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Solution

The fourth proportional to 58,470.91, 80,689.84 and 31,613.41 is: 43,626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,470.91 : 80,689.84 = 31,613.41 : x
  2. Step 2: Convert to fraction form
    58,470.91/80,689.84 = 31,613.41/x
  3. Step 3: Cross multiply
    58,470.91x = 80,689.84 × 31,613.41
  4. Step 4: Simplify right side
    58,470.91x = 2,550,880,562.70
  5. Step 5: Solve for x
    x = 2,550,880,562.70/58,470.91
  6. Step 6: Final answer
    x = 43,626.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.