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Finding the Fourth Proportional to 56,659.96, 84,988.98 and 19,723

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Solution

The fourth proportional to 56,659.96, 84,988.98 and 19,723 is: 29,584.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,659.96 : 84,988.98 = 19,723 : x
  2. Step 2: Convert to fraction form
    56,659.96/84,988.98 = 19,723/x
  3. Step 3: Cross multiply
    56,659.96x = 84,988.98 × 19,723
  4. Step 4: Simplify right side
    56,659.96x = 1,676,237,652.54
  5. Step 5: Solve for x
    x = 1,676,237,652.54/56,659.96
  6. Step 6: Final answer
    x = 29,584.17

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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.