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Finding the Fourth Proportional to 292,781.82, 438,833.81 and 134,678.46

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Solution

The fourth proportional to 292,781.82, 438,833.81 and 134,678.46 is: 201,861.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,781.82 : 438,833.81 = 134,678.46 : x
  2. Step 2: Convert to fraction form
    292,781.82/438,833.81 = 134,678.46/x
  3. Step 3: Cross multiply
    292,781.82x = 438,833.81 × 134,678.46
  4. Step 4: Simplify right side
    292,781.82x = 59,101,461,726.73
  5. Step 5: Solve for x
    x = 59,101,461,726.73/292,781.82
  6. Step 6: Final answer
    x = 201,861.79

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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.