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Finding the Fourth Proportional to 61,628.99, 85,040.69 and 34,769.93

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Solution

The fourth proportional to 61,628.99, 85,040.69 and 34,769.93 is: 47,978.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,628.99 : 85,040.69 = 34,769.93 : x
  2. Step 2: Convert to fraction form
    61,628.99/85,040.69 = 34,769.93/x
  3. Step 3: Cross multiply
    61,628.99x = 85,040.69 × 34,769.93
  4. Step 4: Simplify right side
    61,628.99x = 2,956,858,239.40
  5. Step 5: Solve for x
    x = 2,956,858,239.40/61,628.99
  6. Step 6: Final answer
    x = 47,978.37

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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.