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Finding the Fourth Proportional to 75,239.86, 112,866.72 and 27,220.48

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Solution

The fourth proportional to 75,239.86, 112,866.72 and 27,220.48 is: 40,833.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,239.86 : 112,866.72 = 27,220.48 : x
  2. Step 2: Convert to fraction form
    75,239.86/112,866.72 = 27,220.48/x
  3. Step 3: Cross multiply
    75,239.86x = 112,866.72 × 27,220.48
  4. Step 4: Simplify right side
    75,239.86x = 3,072,285,730.09
  5. Step 5: Solve for x
    x = 3,072,285,730.09/75,239.86
  6. Step 6: Final answer
    x = 40,833.22

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1.5x scale

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.