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Finding the Fourth Proportional to 71,598.36, 98,808.75 and 39,770.22

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Solution

The fourth proportional to 71,598.36, 98,808.75 and 39,770.22 is: 54,884.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,598.36 : 98,808.75 = 39,770.22 : x
  2. Step 2: Convert to fraction form
    71,598.36/98,808.75 = 39,770.22/x
  3. Step 3: Cross multiply
    71,598.36x = 98,808.75 × 39,770.22
  4. Step 4: Simplify right side
    71,598.36x = 3,929,645,725.43
  5. Step 5: Solve for x
    x = 3,929,645,725.43/71,598.36
  6. Step 6: Final answer
    x = 54,884.58

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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.