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Finding the Fourth Proportional to 663,203.80, 994,805.70 and 411,261.40

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Solution

The fourth proportional to 663,203.80, 994,805.70 and 411,261.40 is: 616,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,203.80 : 994,805.70 = 411,261.40 : x
  2. Step 2: Convert to fraction form
    663,203.80/994,805.70 = 411,261.40/x
  3. Step 3: Cross multiply
    663,203.80x = 994,805.70 × 411,261.40
  4. Step 4: Simplify right side
    663,203.80x = 409,125,184,909.98
  5. Step 5: Solve for x
    x = 409,125,184,909.98/663,203.80
  6. Step 6: Final answer
    x = 616,892.10

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Similar ratio
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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.