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Finding the Fourth Proportional to 121,039.68, 167,038.80 and 66,594.12

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Solution

The fourth proportional to 121,039.68, 167,038.80 and 66,594.12 is: 91,902.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,039.68 : 167,038.80 = 66,594.12 : x
  2. Step 2: Convert to fraction form
    121,039.68/167,038.80 = 66,594.12/x
  3. Step 3: Cross multiply
    121,039.68x = 167,038.80 × 66,594.12
  4. Step 4: Simplify right side
    121,039.68x = 11,123,801,891.86
  5. Step 5: Solve for x
    x = 11,123,801,891.86/121,039.68
  6. Step 6: Final answer
    x = 91,902.11

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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.