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Finding the Fourth Proportional to 403,659.43, 557,616.59 and 382,401.79

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Solution

The fourth proportional to 403,659.43, 557,616.59 and 382,401.79 is: 528,251.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,659.43 : 557,616.59 = 382,401.79 : x
  2. Step 2: Convert to fraction form
    403,659.43/557,616.59 = 382,401.79/x
  3. Step 3: Cross multiply
    403,659.43x = 557,616.59 × 382,401.79
  4. Step 4: Simplify right side
    403,659.43x = 213,233,580,277.65
  5. Step 5: Solve for x
    x = 213,233,580,277.65/403,659.43
  6. Step 6: Final answer
    x = 528,251.21

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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.