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Finding the Fourth Proportional to 61,356.36, 92,036.60 and 16,979.40

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Solution

The fourth proportional to 61,356.36, 92,036.60 and 16,979.40 is: 25,469.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,356.36 : 92,036.60 = 16,979.40 : x
  2. Step 2: Convert to fraction form
    61,356.36/92,036.60 = 16,979.40/x
  3. Step 3: Cross multiply
    61,356.36x = 92,036.60 × 16,979.40
  4. Step 4: Simplify right side
    61,356.36x = 1,562,726,288.49
  5. Step 5: Solve for x
    x = 1,562,726,288.49/61,356.36
  6. Step 6: Final answer
    x = 25,469.67

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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.