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Finding the Fourth Proportional to 619,048.69, 928,105.11 and 405,870.24

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Solution

The fourth proportional to 619,048.69, 928,105.11 and 405,870.24 is: 608,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,048.69 : 928,105.11 = 405,870.24 : x
  2. Step 2: Convert to fraction form
    619,048.69/928,105.11 = 405,870.24/x
  3. Step 3: Cross multiply
    619,048.69x = 928,105.11 × 405,870.24
  4. Step 4: Simplify right side
    619,048.69x = 376,690,239,921.27
  5. Step 5: Solve for x
    x = 376,690,239,921.27/619,048.69
  6. Step 6: Final answer
    x = 608,498.57

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1.5x scale

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.