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Finding the Fourth Proportional to 579,805.39, 800,218.89 and 353,582.11

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Solution

The fourth proportional to 579,805.39, 800,218.89 and 353,582.11 is: 487,996.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,805.39 : 800,218.89 = 353,582.11 : x
  2. Step 2: Convert to fraction form
    579,805.39/800,218.89 = 353,582.11/x
  3. Step 3: Cross multiply
    579,805.39x = 800,218.89 × 353,582.11
  4. Step 4: Simplify right side
    579,805.39x = 282,943,083,588.06
  5. Step 5: Solve for x
    x = 282,943,083,588.06/579,805.39
  6. Step 6: Final answer
    x = 487,996.64

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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.