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Finding the Fourth Proportional to 393,637.86, 543,021.10 and 230,187.49

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Solution

The fourth proportional to 393,637.86, 543,021.10 and 230,187.49 is: 317,542.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,637.86 : 543,021.10 = 230,187.49 : x
  2. Step 2: Convert to fraction form
    393,637.86/543,021.10 = 230,187.49/x
  3. Step 3: Cross multiply
    393,637.86x = 543,021.10 × 230,187.49
  4. Step 4: Simplify right side
    393,637.86x = 124,996,662,093.02
  5. Step 5: Solve for x
    x = 124,996,662,093.02/393,637.86
  6. Step 6: Final answer
    x = 317,542.28

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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.