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Finding the Fourth Proportional to 70,011.92, 96,617.94 and 39,384.20

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Solution

The fourth proportional to 70,011.92, 96,617.94 and 39,384.20 is: 54,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,011.92 : 96,617.94 = 39,384.20 : x
  2. Step 2: Convert to fraction form
    70,011.92/96,617.94 = 39,384.20/x
  3. Step 3: Cross multiply
    70,011.92x = 96,617.94 × 39,384.20
  4. Step 4: Simplify right side
    70,011.92x = 3,805,220,272.55
  5. Step 5: Solve for x
    x = 3,805,220,272.55/70,011.92
  6. Step 6: Final answer
    x = 54,351.03

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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.