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Finding the Fourth Proportional to 109,471.79, 151,071.08 and 59,170.79

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Solution

The fourth proportional to 109,471.79, 151,071.08 and 59,170.79 is: 81,655.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,471.79 : 151,071.08 = 59,170.79 : x
  2. Step 2: Convert to fraction form
    109,471.79/151,071.08 = 59,170.79/x
  3. Step 3: Cross multiply
    109,471.79x = 151,071.08 × 59,170.79
  4. Step 4: Simplify right side
    109,471.79x = 8,938,995,231.58
  5. Step 5: Solve for x
    x = 8,938,995,231.58/109,471.79
  6. Step 6: Final answer
    x = 81,655.69

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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.