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Finding the Fourth Proportional to 647,584.40, 969,821.40 and 619,590.80

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Solution

The fourth proportional to 647,584.40, 969,821.40 and 619,590.80 is: 927,898.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,584.40 : 969,821.40 = 619,590.80 : x
  2. Step 2: Convert to fraction form
    647,584.40/969,821.40 = 619,590.80/x
  3. Step 3: Cross multiply
    647,584.40x = 969,821.40 × 619,590.80
  4. Step 4: Simplify right side
    647,584.40x = 600,892,417,083.12
  5. Step 5: Solve for x
    x = 600,892,417,083.12/647,584.40
  6. Step 6: Final answer
    x = 927,898.23

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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.