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Finding the Fourth Proportional to 67,215.72, 100,885.91 and 33,959.22

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Solution

The fourth proportional to 67,215.72, 100,885.91 and 33,959.22 is: 50,970.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,215.72 : 100,885.91 = 33,959.22 : x
  2. Step 2: Convert to fraction form
    67,215.72/100,885.91 = 33,959.22/x
  3. Step 3: Cross multiply
    67,215.72x = 100,885.91 × 33,959.22
  4. Step 4: Simplify right side
    67,215.72x = 3,426,006,264.47
  5. Step 5: Solve for x
    x = 3,426,006,264.47/67,215.72
  6. Step 6: Final answer
    x = 50,970.31

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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.