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Finding the Fourth Proportional to 71,215.70, 106,886.94 and 37,963.22

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Solution

The fourth proportional to 71,215.70, 106,886.94 and 37,963.22 is: 56,978.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,215.70 : 106,886.94 = 37,963.22 : x
  2. Step 2: Convert to fraction form
    71,215.70/106,886.94 = 37,963.22/x
  3. Step 3: Cross multiply
    71,215.70x = 106,886.94 × 37,963.22
  4. Step 4: Simplify right side
    71,215.70x = 4,057,772,418.35
  5. Step 5: Solve for x
    x = 4,057,772,418.35/71,215.70
  6. Step 6: Final answer
    x = 56,978.62

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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.