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Finding the Fourth Proportional to 70,843.26, 97,762.20 and 39,012.42

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Solution

The fourth proportional to 70,843.26, 97,762.20 and 39,012.42 is: 53,836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,843.26 : 97,762.20 = 39,012.42 : x
  2. Step 2: Convert to fraction form
    70,843.26/97,762.20 = 39,012.42/x
  3. Step 3: Cross multiply
    70,843.26x = 97,762.20 × 39,012.42
  4. Step 4: Simplify right side
    70,843.26x = 3,813,940,006.52
  5. Step 5: Solve for x
    x = 3,813,940,006.52/70,843.26
  6. Step 6: Final answer
    x = 53,836.31

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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.