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Finding the Fourth Proportional to 56,658.50, 84,989.55 and 17,215.96

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Solution

The fourth proportional to 56,658.50, 84,989.55 and 17,215.96 is: 25,824.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,658.50 : 84,989.55 = 17,215.96 : x
  2. Step 2: Convert to fraction form
    56,658.50/84,989.55 = 17,215.96/x
  3. Step 3: Cross multiply
    56,658.50x = 84,989.55 × 17,215.96
  4. Step 4: Simplify right side
    56,658.50x = 1,463,176,693.22
  5. Step 5: Solve for x
    x = 1,463,176,693.22/56,658.50
  6. Step 6: Final answer
    x = 25,824.49

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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.