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Finding the Fourth Proportional to 71,495.70, 98,675.91 and 39,674.82

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Solution

The fourth proportional to 71,495.70, 98,675.91 and 39,674.82 is: 54,757.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,495.70 : 98,675.91 = 39,674.82 : x
  2. Step 2: Convert to fraction form
    71,495.70/98,675.91 = 39,674.82/x
  3. Step 3: Cross multiply
    71,495.70x = 98,675.91 × 39,674.82
  4. Step 4: Simplify right side
    71,495.70x = 3,914,948,967.59
  5. Step 5: Solve for x
    x = 3,914,948,967.59/71,495.70
  6. Step 6: Final answer
    x = 54,757.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.