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Finding the Fourth Proportional to 121,114.70, 181,672.05 and 61,930.70

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Solution

The fourth proportional to 121,114.70, 181,672.05 and 61,930.70 is: 92,896.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,114.70 : 181,672.05 = 61,930.70 : x
  2. Step 2: Convert to fraction form
    121,114.70/181,672.05 = 61,930.70/x
  3. Step 3: Cross multiply
    121,114.70x = 181,672.05 × 61,930.70
  4. Step 4: Simplify right side
    121,114.70x = 11,251,077,226.94
  5. Step 5: Solve for x
    x = 11,251,077,226.94/121,114.70
  6. Step 6: Final answer
    x = 92,896.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.