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Finding the Fourth Proportional to 122,794.61, 169,454.86 and 69,079.61

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Solution

The fourth proportional to 122,794.61, 169,454.86 and 69,079.61 is: 95,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,794.61 : 169,454.86 = 69,079.61 : x
  2. Step 2: Convert to fraction form
    122,794.61/169,454.86 = 69,079.61/x
  3. Step 3: Cross multiply
    122,794.61x = 169,454.86 × 69,079.61
  4. Step 4: Simplify right side
    122,794.61x = 11,705,875,641.40
  5. Step 5: Solve for x
    x = 11,705,875,641.40/122,794.61
  6. Step 6: Final answer
    x = 95,328.90

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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.