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Finding the Fourth Proportional to 70,798.46, 97,698.15 and 38,961.20

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Solution

The fourth proportional to 70,798.46, 97,698.15 and 38,961.20 is: 53,764.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,798.46 : 97,698.15 = 38,961.20 : x
  2. Step 2: Convert to fraction form
    70,798.46/97,698.15 = 38,961.20/x
  3. Step 3: Cross multiply
    70,798.46x = 97,698.15 × 38,961.20
  4. Step 4: Simplify right side
    70,798.46x = 3,806,437,161.78
  5. Step 5: Solve for x
    x = 3,806,437,161.78/70,798.46
  6. Step 6: Final answer
    x = 53,764.41

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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.