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Finding the Fourth Proportional to 121,546.88, 167,738.68 and 70,555.76

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Solution

The fourth proportional to 121,546.88, 167,738.68 and 70,555.76 is: 97,369.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,546.88 : 167,738.68 = 70,555.76 : x
  2. Step 2: Convert to fraction form
    121,546.88/167,738.68 = 70,555.76/x
  3. Step 3: Cross multiply
    121,546.88x = 167,738.68 × 70,555.76
  4. Step 4: Simplify right side
    121,546.88x = 11,834,930,048.80
  5. Step 5: Solve for x
    x = 11,834,930,048.80/121,546.88
  6. Step 6: Final answer
    x = 97,369.26

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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.