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Finding the Fourth Proportional to 122,308.90, 168,787.51 and 68,592.77

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Solution

The fourth proportional to 122,308.90, 168,787.51 and 68,592.77 is: 94,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,308.90 : 168,787.51 = 68,592.77 : x
  2. Step 2: Convert to fraction form
    122,308.90/168,787.51 = 68,592.77/x
  3. Step 3: Cross multiply
    122,308.90x = 168,787.51 × 68,592.77
  4. Step 4: Simplify right side
    122,308.90x = 11,577,602,091.58
  5. Step 5: Solve for x
    x = 11,577,602,091.58/122,308.90
  6. Step 6: Final answer
    x = 94,658.70

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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.