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Finding the Fourth Proportional to 217,006.60, 325,509.90 and 133,025.80

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Solution

The fourth proportional to 217,006.60, 325,509.90 and 133,025.80 is: 199,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,006.60 : 325,509.90 = 133,025.80 : x
  2. Step 2: Convert to fraction form
    217,006.60/325,509.90 = 133,025.80/x
  3. Step 3: Cross multiply
    217,006.60x = 325,509.90 × 133,025.80
  4. Step 4: Simplify right side
    217,006.60x = 43,301,214,855.42
  5. Step 5: Solve for x
    x = 43,301,214,855.42/217,006.60
  6. Step 6: Final answer
    x = 199,538.70

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1.5x scale

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.