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Finding the Fourth Proportional to 563,189.78, 777,195.42 and 305,061.86

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Solution

The fourth proportional to 563,189.78, 777,195.42 and 305,061.86 is: 420,981.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,189.78 : 777,195.42 = 305,061.86 : x
  2. Step 2: Convert to fraction form
    563,189.78/777,195.42 = 305,061.86/x
  3. Step 3: Cross multiply
    563,189.78x = 777,195.42 × 305,061.86
  4. Step 4: Simplify right side
    563,189.78x = 237,092,680,408.68
  5. Step 5: Solve for x
    x = 237,092,680,408.68/563,189.78
  6. Step 6: Final answer
    x = 420,981.86

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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.