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Finding the Fourth Proportional to 60,217.31, 90,277.76 and 28,611.51

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Solution

The fourth proportional to 60,217.31, 90,277.76 and 28,611.51 is: 42,894.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,217.31 : 90,277.76 = 28,611.51 : x
  2. Step 2: Convert to fraction form
    60,217.31/90,277.76 = 28,611.51/x
  3. Step 3: Cross multiply
    60,217.31x = 90,277.76 × 28,611.51
  4. Step 4: Simplify right side
    60,217.31x = 2,582,982,889.96
  5. Step 5: Solve for x
    x = 2,582,982,889.96/60,217.31
  6. Step 6: Final answer
    x = 42,894.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.