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Finding the Fourth Proportional to 621,648.24, 857,873.24 and 349,716.32

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Solution

The fourth proportional to 621,648.24, 857,873.24 and 349,716.32 is: 482,607.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,648.24 : 857,873.24 = 349,716.32 : x
  2. Step 2: Convert to fraction form
    621,648.24/857,873.24 = 349,716.32/x
  3. Step 3: Cross multiply
    621,648.24x = 857,873.24 × 349,716.32
  4. Step 4: Simplify right side
    621,648.24x = 300,012,272,519.28
  5. Step 5: Solve for x
    x = 300,012,272,519.28/621,648.24
  6. Step 6: Final answer
    x = 482,607.77

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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.