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Finding the Fourth Proportional to 118,268.64, 163,167.84 and 91,053

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Solution

The fourth proportional to 118,268.64, 163,167.84 and 91,053 is: 125,620.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,268.64 : 163,167.84 = 91,053 : x
  2. Step 2: Convert to fraction form
    118,268.64/163,167.84 = 91,053/x
  3. Step 3: Cross multiply
    118,268.64x = 163,167.84 × 91,053
  4. Step 4: Simplify right side
    118,268.64x = 14,856,921,335.52
  5. Step 5: Solve for x
    x = 14,856,921,335.52/118,268.64
  6. Step 6: Final answer
    x = 125,620.12

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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.