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Finding the Fourth Proportional to 216,867.52, 299,241.59 and 136,237.96

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Solution

The fourth proportional to 216,867.52, 299,241.59 and 136,237.96 is: 187,986.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,867.52 : 299,241.59 = 136,237.96 : x
  2. Step 2: Convert to fraction form
    216,867.52/299,241.59 = 136,237.96/x
  3. Step 3: Cross multiply
    216,867.52x = 299,241.59 × 136,237.96
  4. Step 4: Simplify right side
    216,867.52x = 40,768,063,461.62
  5. Step 5: Solve for x
    x = 40,768,063,461.62/216,867.52
  6. Step 6: Final answer
    x = 187,986.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.