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Finding the Fourth Proportional to 411,648.39, 616,673.45 and 303,381.03

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Solution

The fourth proportional to 411,648.39, 616,673.45 and 303,381.03 is: 454,482.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,648.39 : 616,673.45 = 303,381.03 : x
  2. Step 2: Convert to fraction form
    411,648.39/616,673.45 = 303,381.03/x
  3. Step 3: Cross multiply
    411,648.39x = 616,673.45 × 303,381.03
  4. Step 4: Simplify right side
    411,648.39x = 187,087,024,917.75
  5. Step 5: Solve for x
    x = 187,087,024,917.75/411,648.39
  6. Step 6: Final answer
    x = 454,482.59

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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.