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Finding the Fourth Proportional to 70,813.92, 97,512.42 and 69,242.28

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Solution

The fourth proportional to 70,813.92, 97,512.42 and 69,242.28 is: 95,348.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,813.92 : 97,512.42 = 69,242.28 : x
  2. Step 2: Convert to fraction form
    70,813.92/97,512.42 = 69,242.28/x
  3. Step 3: Cross multiply
    70,813.92x = 97,512.42 × 69,242.28
  4. Step 4: Simplify right side
    70,813.92x = 6,751,982,289.12
  5. Step 5: Solve for x
    x = 6,751,982,289.12/70,813.92
  6. Step 6: Final answer
    x = 95,348.24

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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.