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Finding the Fourth Proportional to 191,679.44, 287,519.15 and 121,411.13

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Solution

The fourth proportional to 191,679.44, 287,519.15 and 121,411.13 is: 182,116.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,679.44 : 287,519.15 = 121,411.13 : x
  2. Step 2: Convert to fraction form
    191,679.44/287,519.15 = 121,411.13/x
  3. Step 3: Cross multiply
    191,679.44x = 287,519.15 × 121,411.13
  4. Step 4: Simplify right side
    191,679.44x = 34,908,023,764.07
  5. Step 5: Solve for x
    x = 34,908,023,764.07/191,679.44
  6. Step 6: Final answer
    x = 182,116.69

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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.