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Finding the Fourth Proportional to 117,640.10, 176,460.15 and 109,864.10

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Solution

The fourth proportional to 117,640.10, 176,460.15 and 109,864.10 is: 164,796.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,640.10 : 176,460.15 = 109,864.10 : x
  2. Step 2: Convert to fraction form
    117,640.10/176,460.15 = 109,864.10/x
  3. Step 3: Cross multiply
    117,640.10x = 176,460.15 × 109,864.10
  4. Step 4: Simplify right side
    117,640.10x = 19,386,635,565.62
  5. Step 5: Solve for x
    x = 19,386,635,565.62/117,640.10
  6. Step 6: Final answer
    x = 164,796.15

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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.