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Finding the Fourth Proportional to 191,881.15, 287,763.33 and 79,534.96

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Solution

The fourth proportional to 191,881.15, 287,763.33 and 79,534.96 is: 119,278.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,881.15 : 287,763.33 = 79,534.96 : x
  2. Step 2: Convert to fraction form
    191,881.15/287,763.33 = 79,534.96/x
  3. Step 3: Cross multiply
    191,881.15x = 287,763.33 × 79,534.96
  4. Step 4: Simplify right side
    191,881.15x = 22,887,246,138.53
  5. Step 5: Solve for x
    x = 22,887,246,138.53/191,881.15
  6. Step 6: Final answer
    x = 119,278.24

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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.