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Finding the Fourth Proportional to 70,147.80, 96,803.73 and 38,316.69

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Solution

The fourth proportional to 70,147.80, 96,803.73 and 38,316.69 is: 52,876.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,147.80 : 96,803.73 = 38,316.69 : x
  2. Step 2: Convert to fraction form
    70,147.80/96,803.73 = 38,316.69/x
  3. Step 3: Cross multiply
    70,147.80x = 96,803.73 × 38,316.69
  4. Step 4: Simplify right side
    70,147.80x = 3,709,198,513.25
  5. Step 5: Solve for x
    x = 3,709,198,513.25/70,147.80
  6. Step 6: Final answer
    x = 52,876.90

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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.