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Finding the Fourth Proportional to 187,809.39, 259,061.81 and 153,404.12

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Solution

The fourth proportional to 187,809.39, 259,061.81 and 153,404.12 is: 211,603.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,809.39 : 259,061.81 = 153,404.12 : x
  2. Step 2: Convert to fraction form
    187,809.39/259,061.81 = 153,404.12/x
  3. Step 3: Cross multiply
    187,809.39x = 259,061.81 × 153,404.12
  4. Step 4: Simplify right side
    187,809.39x = 39,741,146,926.33
  5. Step 5: Solve for x
    x = 39,741,146,926.33/187,809.39
  6. Step 6: Final answer
    x = 211,603.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.