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Finding the Fourth Proportional to 122,476.52, 169,016.16 and 68,760.20

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Solution

The fourth proportional to 122,476.52, 169,016.16 and 68,760.20 is: 94,888.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,476.52 : 169,016.16 = 68,760.20 : x
  2. Step 2: Convert to fraction form
    122,476.52/169,016.16 = 68,760.20/x
  3. Step 3: Cross multiply
    122,476.52x = 169,016.16 × 68,760.20
  4. Step 4: Simplify right side
    122,476.52x = 11,621,584,964.83
  5. Step 5: Solve for x
    x = 11,621,584,964.83/122,476.52
  6. Step 6: Final answer
    x = 94,888.27

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1.5x scale

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.