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Finding the Fourth Proportional to 216,431.48, 324,647.22 and 58,659.93

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Solution

The fourth proportional to 216,431.48, 324,647.22 and 58,659.93 is: 87,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,431.48 : 324,647.22 = 58,659.93 : x
  2. Step 2: Convert to fraction form
    216,431.48/324,647.22 = 58,659.93/x
  3. Step 3: Cross multiply
    216,431.48x = 324,647.22 × 58,659.93
  4. Step 4: Simplify right side
    216,431.48x = 19,043,784,417.32
  5. Step 5: Solve for x
    x = 19,043,784,417.32/216,431.48
  6. Step 6: Final answer
    x = 87,989.90

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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.