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Finding the Fourth Proportional to 622,895.40, 935,379.90 and 342,613.80

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Solution

The fourth proportional to 622,895.40, 935,379.90 and 342,613.80 is: 514,490.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,895.40 : 935,379.90 = 342,613.80 : x
  2. Step 2: Convert to fraction form
    622,895.40/935,379.90 = 342,613.80/x
  3. Step 3: Cross multiply
    622,895.40x = 935,379.90 × 342,613.80
  4. Step 4: Simplify right side
    622,895.40x = 320,474,061,982.62
  5. Step 5: Solve for x
    x = 320,474,061,982.62/622,895.40
  6. Step 6: Final answer
    x = 514,490.98

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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.