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Finding the Fourth Proportional to 121,261.50, 167,340.87 and 70,960.50

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Solution

The fourth proportional to 121,261.50, 167,340.87 and 70,960.50 is: 97,925.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,261.50 : 167,340.87 = 70,960.50 : x
  2. Step 2: Convert to fraction form
    121,261.50/167,340.87 = 70,960.50/x
  3. Step 3: Cross multiply
    121,261.50x = 167,340.87 × 70,960.50
  4. Step 4: Simplify right side
    121,261.50x = 11,874,591,805.64
  5. Step 5: Solve for x
    x = 11,874,591,805.64/121,261.50
  6. Step 6: Final answer
    x = 97,925.49

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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.