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Finding the Fourth Proportional to 439,218.30, 657,843.30 and 360,486.30

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Solution

The fourth proportional to 439,218.30, 657,843.30 and 360,486.30 is: 539,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,218.30 : 657,843.30 = 360,486.30 : x
  2. Step 2: Convert to fraction form
    439,218.30/657,843.30 = 360,486.30/x
  3. Step 3: Cross multiply
    439,218.30x = 657,843.30 × 360,486.30
  4. Step 4: Simplify right side
    439,218.30x = 237,143,497,196.79
  5. Step 5: Solve for x
    x = 237,143,497,196.79/439,218.30
  6. Step 6: Final answer
    x = 539,921.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.