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Finding the Fourth Proportional to 107,879.64, 148,870.47 and 67,615.14

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Solution

The fourth proportional to 107,879.64, 148,870.47 and 67,615.14 is: 93,306.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,879.64 : 148,870.47 = 67,615.14 : x
  2. Step 2: Convert to fraction form
    107,879.64/148,870.47 = 67,615.14/x
  3. Step 3: Cross multiply
    107,879.64x = 148,870.47 × 67,615.14
  4. Step 4: Simplify right side
    107,879.64x = 10,065,897,670.92
  5. Step 5: Solve for x
    x = 10,065,897,670.92/107,879.64
  6. Step 6: Final answer
    x = 93,306.74

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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.