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Finding the Fourth Proportional to 191,706.20, 287,887.35 and 185,801.30

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Solution

The fourth proportional to 191,706.20, 287,887.35 and 185,801.30 is: 279,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,706.20 : 287,887.35 = 185,801.30 : x
  2. Step 2: Convert to fraction form
    191,706.20/287,887.35 = 185,801.30/x
  3. Step 3: Cross multiply
    191,706.20x = 287,887.35 × 185,801.30
  4. Step 4: Simplify right side
    191,706.20x = 53,489,843,883.56
  5. Step 5: Solve for x
    x = 53,489,843,883.56/191,706.20
  6. Step 6: Final answer
    x = 279,019.90

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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.