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Finding the Fourth Proportional to 425,593.86, 587,360.88 and 317,977.08

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Solution

The fourth proportional to 425,593.86, 587,360.88 and 317,977.08 is: 438,839.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,593.86 : 587,360.88 = 317,977.08 : x
  2. Step 2: Convert to fraction form
    425,593.86/587,360.88 = 317,977.08/x
  3. Step 3: Cross multiply
    425,593.86x = 587,360.88 × 317,977.08
  4. Step 4: Simplify right side
    425,593.86x = 186,767,297,528.63
  5. Step 5: Solve for x
    x = 186,767,297,528.63/425,593.86
  6. Step 6: Final answer
    x = 438,839.27

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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.