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Finding the Fourth Proportional to 56,466.50, 84,678.20 and 19,016.50

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Solution

The fourth proportional to 56,466.50, 84,678.20 and 19,016.50 is: 28,517.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,466.50 : 84,678.20 = 19,016.50 : x
  2. Step 2: Convert to fraction form
    56,466.50/84,678.20 = 19,016.50/x
  3. Step 3: Cross multiply
    56,466.50x = 84,678.20 × 19,016.50
  4. Step 4: Simplify right side
    56,466.50x = 1,610,282,990.30
  5. Step 5: Solve for x
    x = 1,610,282,990.30/56,466.50
  6. Step 6: Final answer
    x = 28,517.49

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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.