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Finding the Fourth Proportional to 71,494.51, 98,674.25 and 39,673.66

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Solution

The fourth proportional to 71,494.51, 98,674.25 and 39,673.66 is: 54,756.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,494.51 : 98,674.25 = 39,673.66 : x
  2. Step 2: Convert to fraction form
    71,494.51/98,674.25 = 39,673.66/x
  3. Step 3: Cross multiply
    71,494.51x = 98,674.25 × 39,673.66
  4. Step 4: Simplify right side
    71,494.51x = 3,914,768,645.26
  5. Step 5: Solve for x
    x = 3,914,768,645.26/71,494.51
  6. Step 6: Final answer
    x = 54,756.21

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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.