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Finding the Fourth Proportional to 56,294.52, 84,428.51 and 20,736.53

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Solution

The fourth proportional to 56,294.52, 84,428.51 and 20,736.53 is: 31,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,294.52 : 84,428.51 = 20,736.53 : x
  2. Step 2: Convert to fraction form
    56,294.52/84,428.51 = 20,736.53/x
  3. Step 3: Cross multiply
    56,294.52x = 84,428.51 × 20,736.53
  4. Step 4: Simplify right side
    56,294.52x = 1,750,754,031.69
  5. Step 5: Solve for x
    x = 1,750,754,031.69/56,294.52
  6. Step 6: Final answer
    x = 31,099.90

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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.