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Finding the Fourth Proportional to 61,214.70, 91,712.70 and 52,466.70

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Solution

The fourth proportional to 61,214.70, 91,712.70 and 52,466.70 is: 78,606.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,214.70 : 91,712.70 = 52,466.70 : x
  2. Step 2: Convert to fraction form
    61,214.70/91,712.70 = 52,466.70/x
  3. Step 3: Cross multiply
    61,214.70x = 91,712.70 × 52,466.70
  4. Step 4: Simplify right side
    61,214.70x = 4,811,862,717.09
  5. Step 5: Solve for x
    x = 4,811,862,717.09/61,214.70
  6. Step 6: Final answer
    x = 78,606.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.