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Finding the Fourth Proportional to 40,703.93, 61,006.69 and 20,971.73

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Solution

The fourth proportional to 40,703.93, 61,006.69 and 20,971.73 is: 31,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,703.93 : 61,006.69 = 20,971.73 : x
  2. Step 2: Convert to fraction form
    40,703.93/61,006.69 = 20,971.73/x
  3. Step 3: Cross multiply
    40,703.93x = 61,006.69 × 20,971.73
  4. Step 4: Simplify right side
    40,703.93x = 1,279,415,830.87
  5. Step 5: Solve for x
    x = 1,279,415,830.87/40,703.93
  6. Step 6: Final answer
    x = 31,432.24

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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.