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Finding the Fourth Proportional to 42,216.56, 63,333 and 12,631.84

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Solution

The fourth proportional to 42,216.56, 63,333 and 12,631.84 is: 18,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,216.56 : 63,333 = 12,631.84 : x
  2. Step 2: Convert to fraction form
    42,216.56/63,333 = 12,631.84/x
  3. Step 3: Cross multiply
    42,216.56x = 63,333 × 12,631.84
  4. Step 4: Simplify right side
    42,216.56x = 800,012,322.72
  5. Step 5: Solve for x
    x = 800,012,322.72/42,216.56
  6. Step 6: Final answer
    x = 18,950.20

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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.