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Finding the Fourth Proportional to 191,445.68, 264,190.65 and 119,865.17

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Solution

The fourth proportional to 191,445.68, 264,190.65 and 119,865.17 is: 165,411.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,445.68 : 264,190.65 = 119,865.17 : x
  2. Step 2: Convert to fraction form
    191,445.68/264,190.65 = 119,865.17/x
  3. Step 3: Cross multiply
    191,445.68x = 264,190.65 × 119,865.17
  4. Step 4: Simplify right side
    191,445.68x = 31,667,255,853.71
  5. Step 5: Solve for x
    x = 31,667,255,853.71/191,445.68
  6. Step 6: Final answer
    x = 165,411.18

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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.