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Finding the Fourth Proportional to 439,069.80, 657,620.55 and 360,337.80

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Solution

The fourth proportional to 439,069.80, 657,620.55 and 360,337.80 is: 539,699.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,069.80 : 657,620.55 = 360,337.80 : x
  2. Step 2: Convert to fraction form
    439,069.80/657,620.55 = 360,337.80/x
  3. Step 3: Cross multiply
    439,069.80x = 657,620.55 × 360,337.80
  4. Step 4: Simplify right side
    439,069.80x = 236,965,542,221.79
  5. Step 5: Solve for x
    x = 236,965,542,221.79/439,069.80
  6. Step 6: Final answer
    x = 539,699.02

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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.