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Finding the Fourth Proportional to 391,384.06, 540,100.87 and 230,249.49

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Solution

The fourth proportional to 391,384.06, 540,100.87 and 230,249.49 is: 317,738.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,384.06 : 540,100.87 = 230,249.49 : x
  2. Step 2: Convert to fraction form
    391,384.06/540,100.87 = 230,249.49/x
  3. Step 3: Cross multiply
    391,384.06x = 540,100.87 × 230,249.49
  4. Step 4: Simplify right side
    391,384.06x = 124,357,946,014.31
  5. Step 5: Solve for x
    x = 124,357,946,014.31/391,384.06
  6. Step 6: Final answer
    x = 317,738.91

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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.