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Finding the Fourth Proportional to 408,501.28, 563,713.59 and 236,391.67

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Solution

The fourth proportional to 408,501.28, 563,713.59 and 236,391.67 is: 326,209.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,501.28 : 563,713.59 = 236,391.67 : x
  2. Step 2: Convert to fraction form
    408,501.28/563,713.59 = 236,391.67/x
  3. Step 3: Cross multiply
    408,501.28x = 563,713.59 × 236,391.67
  4. Step 4: Simplify right side
    408,501.28x = 133,257,196,941.80
  5. Step 5: Solve for x
    x = 133,257,196,941.80/408,501.28
  6. Step 6: Final answer
    x = 326,209.99

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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.