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Finding the Fourth Proportional to 122,767.92, 169,398.54 and 69,048.72

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Solution

The fourth proportional to 122,767.92, 169,398.54 and 69,048.72 is: 95,275.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,767.92 : 169,398.54 = 69,048.72 : x
  2. Step 2: Convert to fraction form
    122,767.92/169,398.54 = 69,048.72/x
  3. Step 3: Cross multiply
    122,767.92x = 169,398.54 × 69,048.72
  4. Step 4: Simplify right side
    122,767.92x = 11,696,752,356.87
  5. Step 5: Solve for x
    x = 11,696,752,356.87/122,767.92
  6. Step 6: Final answer
    x = 95,275.32

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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.