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Finding the Fourth Proportional to 122,368.21, 168,921.12 and 114,708.04

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Solution

The fourth proportional to 122,368.21, 168,921.12 and 114,708.04 is: 158,346.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,368.21 : 168,921.12 = 114,708.04 : x
  2. Step 2: Convert to fraction form
    122,368.21/168,921.12 = 114,708.04/x
  3. Step 3: Cross multiply
    122,368.21x = 168,921.12 × 114,708.04
  4. Step 4: Simplify right side
    122,368.21x = 19,376,610,589.80
  5. Step 5: Solve for x
    x = 19,376,610,589.80/122,368.21
  6. Step 6: Final answer
    x = 158,346.77

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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.