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Finding the Fourth Proportional to 70,214.65, 96,889.36 and 39,997.60

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Solution

The fourth proportional to 70,214.65, 96,889.36 and 39,997.60 is: 55,192.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,214.65 : 96,889.36 = 39,997.60 : x
  2. Step 2: Convert to fraction form
    70,214.65/96,889.36 = 39,997.60/x
  3. Step 3: Cross multiply
    70,214.65x = 96,889.36 × 39,997.60
  4. Step 4: Simplify right side
    70,214.65x = 3,875,341,865.54
  5. Step 5: Solve for x
    x = 3,875,341,865.54/70,214.65
  6. Step 6: Final answer
    x = 55,192.78

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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.