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Finding the Fourth Proportional to 217,697.40, 326,526.90 and 59,911.80

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Solution

The fourth proportional to 217,697.40, 326,526.90 and 59,911.80 is: 89,862.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,697.40 : 326,526.90 = 59,911.80 : x
  2. Step 2: Convert to fraction form
    217,697.40/326,526.90 = 59,911.80/x
  3. Step 3: Cross multiply
    217,697.40x = 326,526.90 × 59,911.80
  4. Step 4: Simplify right side
    217,697.40x = 19,562,814,327.42
  5. Step 5: Solve for x
    x = 19,562,814,327.42/217,697.40
  6. Step 6: Final answer
    x = 89,862.42

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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.