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Finding the Fourth Proportional to 121,000.66, 166,984.96 and 66,555.13

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Solution

The fourth proportional to 121,000.66, 166,984.96 and 66,555.13 is: 91,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,000.66 : 166,984.96 = 66,555.13 : x
  2. Step 2: Convert to fraction form
    121,000.66/166,984.96 = 66,555.13/x
  3. Step 3: Cross multiply
    121,000.66x = 166,984.96 × 66,555.13
  4. Step 4: Simplify right side
    121,000.66x = 11,113,705,105.24
  5. Step 5: Solve for x
    x = 11,113,705,105.24/121,000.66
  6. Step 6: Final answer
    x = 91,848.30

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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.