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Finding the Fourth Proportional to 469,609.20, 704,413.80 and 311,324.40

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Solution

The fourth proportional to 469,609.20, 704,413.80 and 311,324.40 is: 466,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,609.20 : 704,413.80 = 311,324.40 : x
  2. Step 2: Convert to fraction form
    469,609.20/704,413.80 = 311,324.40/x
  3. Step 3: Cross multiply
    469,609.20x = 704,413.80 × 311,324.40
  4. Step 4: Simplify right side
    469,609.20x = 219,301,203,636.72
  5. Step 5: Solve for x
    x = 219,301,203,636.72/469,609.20
  6. Step 6: Final answer
    x = 466,986.60

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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.