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Finding the Fourth Proportional to 121,371.50, 167,424.08 and 75,970.67

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Solution

The fourth proportional to 121,371.50, 167,424.08 and 75,970.67 is: 104,796.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,371.50 : 167,424.08 = 75,970.67 : x
  2. Step 2: Convert to fraction form
    121,371.50/167,424.08 = 75,970.67/x
  3. Step 3: Cross multiply
    121,371.50x = 167,424.08 × 75,970.67
  4. Step 4: Simplify right side
    121,371.50x = 12,719,318,314.76
  5. Step 5: Solve for x
    x = 12,719,318,314.76/121,371.50
  6. Step 6: Final answer
    x = 104,796.58

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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.