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Finding the Fourth Proportional to 476,979.30, 715,468.95 and 122,021.10

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Solution

The fourth proportional to 476,979.30, 715,468.95 and 122,021.10 is: 183,031.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,979.30 : 715,468.95 = 122,021.10 : x
  2. Step 2: Convert to fraction form
    476,979.30/715,468.95 = 122,021.10/x
  3. Step 3: Cross multiply
    476,979.30x = 715,468.95 × 122,021.10
  4. Step 4: Simplify right side
    476,979.30x = 87,302,308,294.85
  5. Step 5: Solve for x
    x = 87,302,308,294.85/476,979.30
  6. Step 6: Final answer
    x = 183,031.65

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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.