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Finding the Fourth Proportional to 61,840.80, 85,326.12 and 34,977.48

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Solution

The fourth proportional to 61,840.80, 85,326.12 and 34,977.48 is: 48,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,840.80 : 85,326.12 = 34,977.48 : x
  2. Step 2: Convert to fraction form
    61,840.80/85,326.12 = 34,977.48/x
  3. Step 3: Cross multiply
    61,840.80x = 85,326.12 × 34,977.48
  4. Step 4: Simplify right side
    61,840.80x = 2,984,492,655.78
  5. Step 5: Solve for x
    x = 2,984,492,655.78/61,840.80
  6. Step 6: Final answer
    x = 48,260.90

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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.