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Finding the Fourth Proportional to 393,673, 590,603.16 and 127,433.56

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Solution

The fourth proportional to 393,673, 590,603.16 and 127,433.56 is: 191,180.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,673 : 590,603.16 = 127,433.56 : x
  2. Step 2: Convert to fraction form
    393,673/590,603.16 = 127,433.56/x
  3. Step 3: Cross multiply
    393,673x = 590,603.16 × 127,433.56
  4. Step 4: Simplify right side
    393,673x = 75,262,663,226.05
  5. Step 5: Solve for x
    x = 75,262,663,226.05/393,673
  6. Step 6: Final answer
    x = 191,180.66

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1.5x scale

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.