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Finding the Fourth Proportional to 122,308.71, 168,787.73 and 73,903.92

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Solution

The fourth proportional to 122,308.71, 168,787.73 and 73,903.92 is: 101,988.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,308.71 : 168,787.73 = 73,903.92 : x
  2. Step 2: Convert to fraction form
    122,308.71/168,787.73 = 73,903.92/x
  3. Step 3: Cross multiply
    122,308.71x = 168,787.73 × 73,903.92
  4. Step 4: Simplify right side
    122,308.71x = 12,474,074,894.90
  5. Step 5: Solve for x
    x = 12,474,074,894.90/122,308.71
  6. Step 6: Final answer
    x = 101,988.44

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1.5x scale

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.