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Finding the Third Proportional to 191,787.75 and 287,681.81

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Solution

The third proportional to 191,787.75 and 287,681.81 is: 431,523.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,787.75 : 287,681.81 = 287,681.81 : x
  2. Step 2: Convert to fraction form
    191,787.75/287,681.81 = 287,681.81/x
  3. Step 3: Cross multiply
    191,787.75x = 287,681.81 × 287,681.81
  4. Step 4: Simplify right side
    191,787.75x = 82,760,825,243.29
  5. Step 5: Solve for x
    x = 82,760,825,243.29/191,787.75
  6. Step 6: Final answer
    x = 431,523.00

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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.