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Finding the Fourth Proportional to 61,666.86, 85,100.25 and 33,372.54

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Solution

The fourth proportional to 61,666.86, 85,100.25 and 33,372.54 is: 46,054.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,666.86 : 85,100.25 = 33,372.54 : x
  2. Step 2: Convert to fraction form
    61,666.86/85,100.25 = 33,372.54/x
  3. Step 3: Cross multiply
    61,666.86x = 85,100.25 × 33,372.54
  4. Step 4: Simplify right side
    61,666.86x = 2,840,011,497.14
  5. Step 5: Solve for x
    x = 2,840,011,497.14/61,666.86
  6. Step 6: Final answer
    x = 46,054.10

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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.