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Finding the Fourth Proportional to 606,319.20, 909,559.80 and 206,859.60

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Solution

The fourth proportional to 606,319.20, 909,559.80 and 206,859.60 is: 310,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,319.20 : 909,559.80 = 206,859.60 : x
  2. Step 2: Convert to fraction form
    606,319.20/909,559.80 = 206,859.60/x
  3. Step 3: Cross multiply
    606,319.20x = 909,559.80 × 206,859.60
  4. Step 4: Simplify right side
    606,319.20x = 188,151,176,404.08
  5. Step 5: Solve for x
    x = 188,151,176,404.08/606,319.20
  6. Step 6: Final answer
    x = 310,317.03

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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.