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Finding the Fourth Proportional to 70,224.89, 96,910.36 and 38,393.80

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Solution

The fourth proportional to 70,224.89, 96,910.36 and 38,393.80 is: 52,983.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,224.89 : 96,910.36 = 38,393.80 : x
  2. Step 2: Convert to fraction form
    70,224.89/96,910.36 = 38,393.80/x
  3. Step 3: Cross multiply
    70,224.89x = 96,910.36 × 38,393.80
  4. Step 4: Simplify right side
    70,224.89x = 3,720,756,641.51
  5. Step 5: Solve for x
    x = 3,720,756,641.51/70,224.89
  6. Step 6: Final answer
    x = 52,983.45

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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.