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Finding the Fourth Proportional to 61,784.47, 85,260.28 and 33,489.55

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Solution

The fourth proportional to 61,784.47, 85,260.28 and 33,489.55 is: 46,214.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,784.47 : 85,260.28 = 33,489.55 : x
  2. Step 2: Convert to fraction form
    61,784.47/85,260.28 = 33,489.55/x
  3. Step 3: Cross multiply
    61,784.47x = 85,260.28 × 33,489.55
  4. Step 4: Simplify right side
    61,784.47x = 2,855,327,816.32
  5. Step 5: Solve for x
    x = 2,855,327,816.32/61,784.47
  6. Step 6: Final answer
    x = 46,214.33

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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.