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Finding the Fourth Proportional to 408,048.15, 571,857.90 and 408,048.15

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Solution

The fourth proportional to 408,048.15, 571,857.90 and 408,048.15 is: 571,857.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,048.15 : 571,857.90 = 408,048.15 : x
  2. Step 2: Convert to fraction form
    408,048.15/571,857.90 = 408,048.15/x
  3. Step 3: Cross multiply
    408,048.15x = 571,857.90 × 408,048.15
  4. Step 4: Simplify right side
    408,048.15x = 233,345,558,157.89
  5. Step 5: Solve for x
    x = 233,345,558,157.89/408,048.15
  6. Step 6: Final answer
    x = 571,857.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.