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Finding the Fourth Proportional to 88,364.71, 121,939.65 and 48,078.64

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Solution

The fourth proportional to 88,364.71, 121,939.65 and 48,078.64 is: 66,346.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,364.71 : 121,939.65 = 48,078.64 : x
  2. Step 2: Convert to fraction form
    88,364.71/121,939.65 = 48,078.64/x
  3. Step 3: Cross multiply
    88,364.71x = 121,939.65 × 48,078.64
  4. Step 4: Simplify right side
    88,364.71x = 5,862,691,924.38
  5. Step 5: Solve for x
    x = 5,862,691,924.38/88,364.71
  6. Step 6: Final answer
    x = 66,346.53

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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.