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Finding the Fourth Proportional to 216,605.64, 324,875.58 and 74,472.48

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Solution

The fourth proportional to 216,605.64, 324,875.58 and 74,472.48 is: 111,697.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,605.64 : 324,875.58 = 74,472.48 : x
  2. Step 2: Convert to fraction form
    216,605.64/324,875.58 = 74,472.48/x
  3. Step 3: Cross multiply
    216,605.64x = 324,875.58 × 74,472.48
  4. Step 4: Simplify right side
    216,605.64x = 24,194,290,134.04
  5. Step 5: Solve for x
    x = 24,194,290,134.04/216,605.64
  6. Step 6: Final answer
    x = 111,697.42

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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.