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Finding the Fourth Proportional to 191,908.73, 287,862.81 and 51,667.49

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Solution

The fourth proportional to 191,908.73, 287,862.81 and 51,667.49 is: 77,501.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,908.73 : 287,862.81 = 51,667.49 : x
  2. Step 2: Convert to fraction form
    191,908.73/287,862.81 = 51,667.49/x
  3. Step 3: Cross multiply
    191,908.73x = 287,862.81 × 51,667.49
  4. Step 4: Simplify right side
    191,908.73x = 14,873,147,417.73
  5. Step 5: Solve for x
    x = 14,873,147,417.73/191,908.73
  6. Step 6: Final answer
    x = 77,501.15

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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.