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Finding the Fourth Proportional to 191,763.18, 287,543.46 and 85,100.79

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Solution

The fourth proportional to 191,763.18, 287,543.46 and 85,100.79 is: 127,606.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,763.18 : 287,543.46 = 85,100.79 : x
  2. Step 2: Convert to fraction form
    191,763.18/287,543.46 = 85,100.79/x
  3. Step 3: Cross multiply
    191,763.18x = 287,543.46 × 85,100.79
  4. Step 4: Simplify right side
    191,763.18x = 24,470,175,605.33
  5. Step 5: Solve for x
    x = 24,470,175,605.33/191,763.18
  6. Step 6: Final answer
    x = 127,606.23

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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.