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Finding the Fourth Proportional to 664,219.80, 996,329.70 and 564,820.65

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Solution

The fourth proportional to 664,219.80, 996,329.70 and 564,820.65 is: 847,230.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,219.80 : 996,329.70 = 564,820.65 : x
  2. Step 2: Convert to fraction form
    664,219.80/996,329.70 = 564,820.65/x
  3. Step 3: Cross multiply
    664,219.80x = 996,329.70 × 564,820.65
  4. Step 4: Simplify right side
    664,219.80x = 562,747,588,768.31
  5. Step 5: Solve for x
    x = 562,747,588,768.31/664,219.80
  6. Step 6: Final answer
    x = 847,230.98

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Double scale
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Similar ratio
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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.