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Finding the Fourth Proportional to 404,668.10, 607,002.15 and 215,711.30

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Solution

The fourth proportional to 404,668.10, 607,002.15 and 215,711.30 is: 323,566.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,668.10 : 607,002.15 = 215,711.30 : x
  2. Step 2: Convert to fraction form
    404,668.10/607,002.15 = 215,711.30/x
  3. Step 3: Cross multiply
    404,668.10x = 607,002.15 × 215,711.30
  4. Step 4: Simplify right side
    404,668.10x = 130,937,222,879.30
  5. Step 5: Solve for x
    x = 130,937,222,879.30/404,668.10
  6. Step 6: Final answer
    x = 323,566.95

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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.