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Finding the Fourth Proportional to 38,707.78, 58,087.56 and 14,083.78

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Solution

The fourth proportional to 38,707.78, 58,087.56 and 14,083.78 is: 21,135.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,707.78 : 58,087.56 = 14,083.78 : x
  2. Step 2: Convert to fraction form
    38,707.78/58,087.56 = 14,083.78/x
  3. Step 3: Cross multiply
    38,707.78x = 58,087.56 × 14,083.78
  4. Step 4: Simplify right side
    38,707.78x = 818,092,415.78
  5. Step 5: Solve for x
    x = 818,092,415.78/38,707.78
  6. Step 6: Final answer
    x = 21,135.09

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1.5x scale

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.