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Finding the Fourth Proportional to 575,998.80, 863,998.20 and 436,030.80

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Solution

The fourth proportional to 575,998.80, 863,998.20 and 436,030.80 is: 654,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,998.80 : 863,998.20 = 436,030.80 : x
  2. Step 2: Convert to fraction form
    575,998.80/863,998.20 = 436,030.80/x
  3. Step 3: Cross multiply
    575,998.80x = 863,998.20 × 436,030.80
  4. Step 4: Simplify right side
    575,998.80x = 376,729,826,344.56
  5. Step 5: Solve for x
    x = 376,729,826,344.56/575,998.80
  6. Step 6: Final answer
    x = 654,046.20

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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.