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Finding the Fourth Proportional to 404,677.80, 607,016.70 and 194,207.40

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Solution

The fourth proportional to 404,677.80, 607,016.70 and 194,207.40 is: 291,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,677.80 : 607,016.70 = 194,207.40 : x
  2. Step 2: Convert to fraction form
    404,677.80/607,016.70 = 194,207.40/x
  3. Step 3: Cross multiply
    404,677.80x = 607,016.70 × 194,207.40
  4. Step 4: Simplify right side
    404,677.80x = 117,887,135,063.58
  5. Step 5: Solve for x
    x = 117,887,135,063.58/404,677.80
  6. Step 6: Final answer
    x = 291,311.10

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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.