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Finding the Fourth Proportional to 117,672.96, 176,340.96 and 91,254

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Solution

The fourth proportional to 117,672.96, 176,340.96 and 91,254 is: 136,750.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,672.96 : 176,340.96 = 91,254 : x
  2. Step 2: Convert to fraction form
    117,672.96/176,340.96 = 91,254/x
  3. Step 3: Cross multiply
    117,672.96x = 176,340.96 × 91,254
  4. Step 4: Simplify right side
    117,672.96x = 16,091,817,963.84
  5. Step 5: Solve for x
    x = 16,091,817,963.84/117,672.96
  6. Step 6: Final answer
    x = 136,750.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.