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Finding the Fourth Proportional to 121,645.53, 167,719.01 and 93,000.69

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Solution

The fourth proportional to 121,645.53, 167,719.01 and 93,000.69 is: 128,224.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,645.53 : 167,719.01 = 93,000.69 : x
  2. Step 2: Convert to fraction form
    121,645.53/167,719.01 = 93,000.69/x
  3. Step 3: Cross multiply
    121,645.53x = 167,719.01 × 93,000.69
  4. Step 4: Simplify right side
    121,645.53x = 15,597,983,191.11
  5. Step 5: Solve for x
    x = 15,597,983,191.11/121,645.53
  6. Step 6: Final answer
    x = 128,224.88

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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.