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Finding the Fourth Proportional to 58,647.79, 80,980.54 and 54,169.91

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Solution

The fourth proportional to 58,647.79, 80,980.54 and 54,169.91 is: 74,797.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,647.79 : 80,980.54 = 54,169.91 : x
  2. Step 2: Convert to fraction form
    58,647.79/80,980.54 = 54,169.91/x
  3. Step 3: Cross multiply
    58,647.79x = 80,980.54 × 54,169.91
  4. Step 4: Simplify right side
    58,647.79x = 4,386,708,563.55
  5. Step 5: Solve for x
    x = 4,386,708,563.55/58,647.79
  6. Step 6: Final answer
    x = 74,797.51

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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.