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Finding the Fourth Proportional to 122,809.97, 169,478.46 and 69,095.90

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Solution

The fourth proportional to 122,809.97, 169,478.46 and 69,095.90 is: 95,352.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,809.97 : 169,478.46 = 69,095.90 : x
  2. Step 2: Convert to fraction form
    122,809.97/169,478.46 = 69,095.90/x
  3. Step 3: Cross multiply
    122,809.97x = 169,478.46 × 69,095.90
  4. Step 4: Simplify right side
    122,809.97x = 11,710,267,148.01
  5. Step 5: Solve for x
    x = 11,710,267,148.01/122,809.97
  6. Step 6: Final answer
    x = 95,352.74

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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.