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Finding the Fourth Proportional to 191,801.10, 287,701.65 and 188,520.60

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Solution

The fourth proportional to 191,801.10, 287,701.65 and 188,520.60 is: 282,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,801.10 : 287,701.65 = 188,520.60 : x
  2. Step 2: Convert to fraction form
    191,801.10/287,701.65 = 188,520.60/x
  3. Step 3: Cross multiply
    191,801.10x = 287,701.65 × 188,520.60
  4. Step 4: Simplify right side
    191,801.10x = 54,237,687,678.99
  5. Step 5: Solve for x
    x = 54,237,687,678.99/191,801.10
  6. Step 6: Final answer
    x = 282,780.90

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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.