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Finding the Fourth Proportional to 348,221.11, 480,744.23 and 266,398.61

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Solution

The fourth proportional to 348,221.11, 480,744.23 and 266,398.61 is: 367,782.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,221.11 : 480,744.23 = 266,398.61 : x
  2. Step 2: Convert to fraction form
    348,221.11/480,744.23 = 266,398.61/x
  3. Step 3: Cross multiply
    348,221.11x = 480,744.23 × 266,398.61
  4. Step 4: Simplify right side
    348,221.11x = 128,069,593,003.15
  5. Step 5: Solve for x
    x = 128,069,593,003.15/348,221.11
  6. Step 6: Final answer
    x = 367,782.39

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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.