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Finding the Fourth Proportional to 106,661.64, 147,194.46 and 61,340.52

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Solution

The fourth proportional to 106,661.64, 147,194.46 and 61,340.52 is: 84,650.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,661.64 : 147,194.46 = 61,340.52 : x
  2. Step 2: Convert to fraction form
    106,661.64/147,194.46 = 61,340.52/x
  3. Step 3: Cross multiply
    106,661.64x = 147,194.46 × 61,340.52
  4. Step 4: Simplify right side
    106,661.64x = 9,028,984,717.52
  5. Step 5: Solve for x
    x = 9,028,984,717.52/106,661.64
  6. Step 6: Final answer
    x = 84,650.72

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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.