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Finding the Fourth Proportional to 191,763.40, 287,990.70 and 185,542.60

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Solution

The fourth proportional to 191,763.40, 287,990.70 and 185,542.60 is: 278,648.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,763.40 : 287,990.70 = 185,542.60 : x
  2. Step 2: Convert to fraction form
    191,763.40/287,990.70 = 185,542.60/x
  3. Step 3: Cross multiply
    191,763.40x = 287,990.70 × 185,542.60
  4. Step 4: Simplify right side
    191,763.40x = 53,434,543,253.82
  5. Step 5: Solve for x
    x = 53,434,543,253.82/191,763.40
  6. Step 6: Final answer
    x = 278,648.29

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