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Finding the Fourth Proportional to 61,574.72, 92,371.80 and 20,012

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Solution

The fourth proportional to 61,574.72, 92,371.80 and 20,012 is: 30,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,574.72 : 92,371.80 = 20,012 : x
  2. Step 2: Convert to fraction form
    61,574.72/92,371.80 = 20,012/x
  3. Step 3: Cross multiply
    61,574.72x = 92,371.80 × 20,012
  4. Step 4: Simplify right side
    61,574.72x = 1,848,544,461.60
  5. Step 5: Solve for x
    x = 1,848,544,461.60/61,574.72
  6. Step 6: Final answer
    x = 30,021.16

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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.