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Finding the Fourth Proportional to 209,889.57, 289,538.48 and 133,277.59

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Solution

The fourth proportional to 209,889.57, 289,538.48 and 133,277.59 is: 183,853.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,889.57 : 289,538.48 = 133,277.59 : x
  2. Step 2: Convert to fraction form
    209,889.57/289,538.48 = 133,277.59/x
  3. Step 3: Cross multiply
    209,889.57x = 289,538.48 × 133,277.59
  4. Step 4: Simplify right side
    209,889.57x = 38,588,990,436.01
  5. Step 5: Solve for x
    x = 38,588,990,436.01/209,889.57
  6. Step 6: Final answer
    x = 183,853.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.