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Finding the Fourth Proportional to 61,877.76, 85,390.80 and 33,583.45

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Solution

The fourth proportional to 61,877.76, 85,390.80 and 33,583.45 is: 46,344.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,877.76 : 85,390.80 = 33,583.45 : x
  2. Step 2: Convert to fraction form
    61,877.76/85,390.80 = 33,583.45/x
  3. Step 3: Cross multiply
    61,877.76x = 85,390.80 × 33,583.45
  4. Step 4: Simplify right side
    61,877.76x = 2,867,717,662.26
  5. Step 5: Solve for x
    x = 2,867,717,662.26/61,877.76
  6. Step 6: Final answer
    x = 46,344.88

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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.