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Finding the Fourth Proportional to 118,957.90, 164,225.66 and 91,874.14

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Solution

The fourth proportional to 118,957.90, 164,225.66 and 91,874.14 is: 126,835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,957.90 : 164,225.66 = 91,874.14 : x
  2. Step 2: Convert to fraction form
    118,957.90/164,225.66 = 91,874.14/x
  3. Step 3: Cross multiply
    118,957.90x = 164,225.66 × 91,874.14
  4. Step 4: Simplify right side
    118,957.90x = 15,088,091,278.43
  5. Step 5: Solve for x
    x = 15,088,091,278.43/118,957.90
  6. Step 6: Final answer
    x = 126,835.56

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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.