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Finding the Fourth Proportional to 61,808.85, 85,232.12 and 52,885.89

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Solution

The fourth proportional to 61,808.85, 85,232.12 and 52,885.89 is: 72,927.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,808.85 : 85,232.12 = 52,885.89 : x
  2. Step 2: Convert to fraction form
    61,808.85/85,232.12 = 52,885.89/x
  3. Step 3: Cross multiply
    61,808.85x = 85,232.12 × 52,885.89
  4. Step 4: Simplify right side
    61,808.85x = 4,507,576,258.36
  5. Step 5: Solve for x
    x = 4,507,576,258.36/61,808.85
  6. Step 6: Final answer
    x = 72,927.68

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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.