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Finding the Fourth Proportional to 71,673.46, 98,907.42 and 39,841.54

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Solution

The fourth proportional to 71,673.46, 98,907.42 and 39,841.54 is: 54,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,673.46 : 98,907.42 = 39,841.54 : x
  2. Step 2: Convert to fraction form
    71,673.46/98,907.42 = 39,841.54/x
  3. Step 3: Cross multiply
    71,673.46x = 98,907.42 × 39,841.54
  4. Step 4: Simplify right side
    71,673.46x = 3,940,623,930.23
  5. Step 5: Solve for x
    x = 3,940,623,930.23/71,673.46
  6. Step 6: Final answer
    x = 54,980.24

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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.