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Finding the Fourth Proportional to 122,444.60, 168,952.20 and 68,731.88

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Solution

The fourth proportional to 122,444.60, 168,952.20 and 68,731.88 is: 94,838.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,444.60 : 168,952.20 = 68,731.88 : x
  2. Step 2: Convert to fraction form
    122,444.60/168,952.20 = 68,731.88/x
  3. Step 3: Cross multiply
    122,444.60x = 168,952.20 × 68,731.88
  4. Step 4: Simplify right side
    122,444.60x = 11,612,402,336.14
  5. Step 5: Solve for x
    x = 11,612,402,336.14/122,444.60
  6. Step 6: Final answer
    x = 94,838.01

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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.