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Finding the Fourth Proportional to 60,655.30, 90,979.84 and 23,212.50

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Solution

The fourth proportional to 60,655.30, 90,979.84 and 23,212.50 is: 34,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,655.30 : 90,979.84 = 23,212.50 : x
  2. Step 2: Convert to fraction form
    60,655.30/90,979.84 = 23,212.50/x
  3. Step 3: Cross multiply
    60,655.30x = 90,979.84 × 23,212.50
  4. Step 4: Simplify right side
    60,655.30x = 2,111,869,536
  5. Step 5: Solve for x
    x = 2,111,869,536/60,655.30
  6. Step 6: Final answer
    x = 34,817.56

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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.