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Finding the Fourth Proportional to 61,918.75, 85,448.21 and 35,066.49

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Solution

The fourth proportional to 61,918.75, 85,448.21 and 35,066.49 is: 48,391.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,918.75 : 85,448.21 = 35,066.49 : x
  2. Step 2: Convert to fraction form
    61,918.75/85,448.21 = 35,066.49/x
  3. Step 3: Cross multiply
    61,918.75x = 85,448.21 × 35,066.49
  4. Step 4: Simplify right side
    61,918.75x = 2,996,368,801.48
  5. Step 5: Solve for x
    x = 2,996,368,801.48/61,918.75
  6. Step 6: Final answer
    x = 48,391.95

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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.