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Finding the Fourth Proportional to 58,691.40, 88,036.92 and 20,768.82

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Solution

The fourth proportional to 58,691.40, 88,036.92 and 20,768.82 is: 31,153.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,691.40 : 88,036.92 = 20,768.82 : x
  2. Step 2: Convert to fraction form
    58,691.40/88,036.92 = 20,768.82/x
  3. Step 3: Cross multiply
    58,691.40x = 88,036.92 × 20,768.82
  4. Step 4: Simplify right side
    58,691.40x = 1,828,422,944.83
  5. Step 5: Solve for x
    x = 1,828,422,944.83/58,691.40
  6. Step 6: Final answer
    x = 31,153.17

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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.