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Finding the Fourth Proportional to 61,918.64, 85,448.74 and 35,060.44

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Solution

The fourth proportional to 61,918.64, 85,448.74 and 35,060.44 is: 48,383.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,918.64 : 85,448.74 = 35,060.44 : x
  2. Step 2: Convert to fraction form
    61,918.64/85,448.74 = 35,060.44/x
  3. Step 3: Cross multiply
    61,918.64x = 85,448.74 × 35,060.44
  4. Step 4: Simplify right side
    61,918.64x = 2,995,870,421.85
  5. Step 5: Solve for x
    x = 2,995,870,421.85/61,918.64
  6. Step 6: Final answer
    x = 48,383.98

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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.