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Finding the Fourth Proportional to 429,583.82, 641,235.24 and 398,360.75

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Solution

The fourth proportional to 429,583.82, 641,235.24 and 398,360.75 is: 594,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,583.82 : 641,235.24 = 398,360.75 : x
  2. Step 2: Convert to fraction form
    429,583.82/641,235.24 = 398,360.75/x
  3. Step 3: Cross multiply
    429,583.82x = 641,235.24 × 398,360.75
  4. Step 4: Simplify right side
    429,583.82x = 255,442,947,926.65
  5. Step 5: Solve for x
    x = 255,442,947,926.65/429,583.82
  6. Step 6: Final answer
    x = 594,628.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.