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Finding the Fourth Proportional to 685,354.13, 945,657.41 and 443,603.15

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Solution

The fourth proportional to 685,354.13, 945,657.41 and 443,603.15 is: 612,087.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,354.13 : 945,657.41 = 443,603.15 : x
  2. Step 2: Convert to fraction form
    685,354.13/945,657.41 = 443,603.15/x
  3. Step 3: Cross multiply
    685,354.13x = 945,657.41 × 443,603.15
  4. Step 4: Simplify right side
    685,354.13x = 419,496,598,950.54
  5. Step 5: Solve for x
    x = 419,496,598,950.54/685,354.13
  6. Step 6: Final answer
    x = 612,087.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.