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Finding the Fourth Proportional to 107,310.67, 148,095.65 and 61,990.56

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Solution

The fourth proportional to 107,310.67, 148,095.65 and 61,990.56 is: 85,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,310.67 : 148,095.65 = 61,990.56 : x
  2. Step 2: Convert to fraction form
    107,310.67/148,095.65 = 61,990.56/x
  3. Step 3: Cross multiply
    107,310.67x = 148,095.65 × 61,990.56
  4. Step 4: Simplify right side
    107,310.67x = 9,180,532,277.06
  5. Step 5: Solve for x
    x = 9,180,532,277.06/107,310.67
  6. Step 6: Final answer
    x = 85,550.97

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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.