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Finding the Fourth Proportional to 191,776.30, 287,773.80 and 132,654.40

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Solution

The fourth proportional to 191,776.30, 287,773.80 and 132,654.40 is: 199,057.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,776.30 : 287,773.80 = 132,654.40 : x
  2. Step 2: Convert to fraction form
    191,776.30/287,773.80 = 132,654.40/x
  3. Step 3: Cross multiply
    191,776.30x = 287,773.80 × 132,654.40
  4. Step 4: Simplify right side
    191,776.30x = 38,174,460,774.72
  5. Step 5: Solve for x
    x = 38,174,460,774.72/191,776.30
  6. Step 6: Final answer
    x = 199,057.24

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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.