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Finding the Fourth Proportional to 122,792.64, 169,463.69 and 69,074.45

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Solution

The fourth proportional to 122,792.64, 169,463.69 and 69,074.45 is: 95,328.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,792.64 : 169,463.69 = 69,074.45 : x
  2. Step 2: Convert to fraction form
    122,792.64/169,463.69 = 69,074.45/x
  3. Step 3: Cross multiply
    122,792.64x = 169,463.69 × 69,074.45
  4. Step 4: Simplify right side
    122,792.64x = 11,705,610,836.35
  5. Step 5: Solve for x
    x = 11,705,610,836.35/122,792.64
  6. Step 6: Final answer
    x = 95,328.28

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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.