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Finding the Fourth Proportional to 387,360.86, 579,791.36 and 200,114.78

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Solution

The fourth proportional to 387,360.86, 579,791.36 and 200,114.78 is: 299,526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,360.86 : 579,791.36 = 200,114.78 : x
  2. Step 2: Convert to fraction form
    387,360.86/579,791.36 = 200,114.78/x
  3. Step 3: Cross multiply
    387,360.86x = 579,791.36 × 200,114.78
  4. Step 4: Simplify right side
    387,360.86x = 116,024,820,452.30
  5. Step 5: Solve for x
    x = 116,024,820,452.30/387,360.86
  6. Step 6: Final answer
    x = 299,526.44

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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.