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Finding the Fourth Proportional to 58,561.26, 87,831.90 and 21,113.88

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Solution

The fourth proportional to 58,561.26, 87,831.90 and 21,113.88 is: 31,667.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,561.26 : 87,831.90 = 21,113.88 : x
  2. Step 2: Convert to fraction form
    58,561.26/87,831.90 = 21,113.88/x
  3. Step 3: Cross multiply
    58,561.26x = 87,831.90 × 21,113.88
  4. Step 4: Simplify right side
    58,561.26x = 1,854,472,196.77
  5. Step 5: Solve for x
    x = 1,854,472,196.77/58,561.26
  6. Step 6: Final answer
    x = 31,667.22

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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.