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Finding the Fourth Proportional to 112,470.51, 168,622.42 and 68,086.77

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Solution

The fourth proportional to 112,470.51, 168,622.42 and 68,086.77 is: 102,079.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,470.51 : 168,622.42 = 68,086.77 : x
  2. Step 2: Convert to fraction form
    112,470.51/168,622.42 = 68,086.77/x
  3. Step 3: Cross multiply
    112,470.51x = 168,622.42 × 68,086.77
  4. Step 4: Simplify right side
    112,470.51x = 11,480,955,927.38
  5. Step 5: Solve for x
    x = 11,480,955,927.38/112,470.51
  6. Step 6: Final answer
    x = 102,079.70

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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.