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Finding the Fourth Proportional to 216,596.86, 324,916.98 and 74,423.40

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Solution

The fourth proportional to 216,596.86, 324,916.98 and 74,423.40 is: 111,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,596.86 : 324,916.98 = 74,423.40 : x
  2. Step 2: Convert to fraction form
    216,596.86/324,916.98 = 74,423.40/x
  3. Step 3: Cross multiply
    216,596.86x = 324,916.98 × 74,423.40
  4. Step 4: Simplify right side
    216,596.86x = 24,181,426,648.42
  5. Step 5: Solve for x
    x = 24,181,426,648.42/216,596.86
  6. Step 6: Final answer
    x = 111,642.56

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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.