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Finding the Fourth Proportional to 122,253.90, 183,380.85 and 69,765.90

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Solution

The fourth proportional to 122,253.90, 183,380.85 and 69,765.90 is: 104,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,253.90 : 183,380.85 = 69,765.90 : x
  2. Step 2: Convert to fraction form
    122,253.90/183,380.85 = 69,765.90/x
  3. Step 3: Cross multiply
    122,253.90x = 183,380.85 × 69,765.90
  4. Step 4: Simplify right side
    122,253.90x = 12,793,730,043.02
  5. Step 5: Solve for x
    x = 12,793,730,043.02/122,253.90
  6. Step 6: Final answer
    x = 104,648.85

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1.5x scale

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.