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Finding the Fourth Proportional to 616,111.80, 923,768.10 and 261,029.40

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Solution

The fourth proportional to 616,111.80, 923,768.10 and 261,029.40 is: 391,374.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,111.80 : 923,768.10 = 261,029.40 : x
  2. Step 2: Convert to fraction form
    616,111.80/923,768.10 = 261,029.40/x
  3. Step 3: Cross multiply
    616,111.80x = 923,768.10 × 261,029.40
  4. Step 4: Simplify right side
    616,111.80x = 241,130,632,882.14
  5. Step 5: Solve for x
    x = 241,130,632,882.14/616,111.80
  6. Step 6: Final answer
    x = 391,374.80

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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.