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Finding the Fourth Proportional to 56,418.84, 84,629.10 and 21,349.08

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Solution

The fourth proportional to 56,418.84, 84,629.10 and 21,349.08 is: 32,023.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,418.84 : 84,629.10 = 21,349.08 : x
  2. Step 2: Convert to fraction form
    56,418.84/84,629.10 = 21,349.08/x
  3. Step 3: Cross multiply
    56,418.84x = 84,629.10 × 21,349.08
  4. Step 4: Simplify right side
    56,418.84x = 1,806,753,426.23
  5. Step 5: Solve for x
    x = 1,806,753,426.23/56,418.84
  6. Step 6: Final answer
    x = 32,023.94

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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.