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Finding the Fourth Proportional to 459,463.40, 687,812.70 and 404,167.40

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Solution

The fourth proportional to 459,463.40, 687,812.70 and 404,167.40 is: 605,035.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,463.40 : 687,812.70 = 404,167.40 : x
  2. Step 2: Convert to fraction form
    459,463.40/687,812.70 = 404,167.40/x
  3. Step 3: Cross multiply
    459,463.40x = 687,812.70 × 404,167.40
  4. Step 4: Simplify right side
    459,463.40x = 277,991,470,645.98
  5. Step 5: Solve for x
    x = 277,991,470,645.98/459,463.40
  6. Step 6: Final answer
    x = 605,035.07

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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.