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Finding the Fourth Proportional to 61,971.70, 92,957.55 and 56,431.30

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Solution

The fourth proportional to 61,971.70, 92,957.55 and 56,431.30 is: 84,646.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971.70 : 92,957.55 = 56,431.30 : x
  2. Step 2: Convert to fraction form
    61,971.70/92,957.55 = 56,431.30/x
  3. Step 3: Cross multiply
    61,971.70x = 92,957.55 × 56,431.30
  4. Step 4: Simplify right side
    61,971.70x = 5,245,715,391.32
  5. Step 5: Solve for x
    x = 5,245,715,391.32/61,971.70
  6. Step 6: Final answer
    x = 84,646.95

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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.