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Finding the Fourth Proportional to 70,057.35, 96,679.31 and 39,841.92

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Solution

The fourth proportional to 70,057.35, 96,679.31 and 39,841.92 is: 54,981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,057.35 : 96,679.31 = 39,841.92 : x
  2. Step 2: Convert to fraction form
    70,057.35/96,679.31 = 39,841.92/x
  3. Step 3: Cross multiply
    70,057.35x = 96,679.31 × 39,841.92
  4. Step 4: Simplify right side
    70,057.35x = 3,851,889,135.47
  5. Step 5: Solve for x
    x = 3,851,889,135.47/70,057.35
  6. Step 6: Final answer
    x = 54,981.94

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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.