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Finding the Fourth Proportional to 67,710.16, 101,344.44 and 61,243.60

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Solution

The fourth proportional to 67,710.16, 101,344.44 and 61,243.60 is: 91,665.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,710.16 : 101,344.44 = 61,243.60 : x
  2. Step 2: Convert to fraction form
    67,710.16/101,344.44 = 61,243.60/x
  3. Step 3: Cross multiply
    67,710.16x = 101,344.44 × 61,243.60
  4. Step 4: Simplify right side
    67,710.16x = 6,206,698,345.58
  5. Step 5: Solve for x
    x = 6,206,698,345.58/67,710.16
  6. Step 6: Final answer
    x = 91,665.69

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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.