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Finding the Fourth Proportional to 620,001.20, 930,131.40 and 199,319.60

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Solution

The fourth proportional to 620,001.20, 930,131.40 and 199,319.60 is: 299,021.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,001.20 : 930,131.40 = 199,319.60 : x
  2. Step 2: Convert to fraction form
    620,001.20/930,131.40 = 199,319.60/x
  3. Step 3: Cross multiply
    620,001.20x = 930,131.40 × 199,319.60
  4. Step 4: Simplify right side
    620,001.20x = 185,393,418,595.44
  5. Step 5: Solve for x
    x = 185,393,418,595.44/620,001.20
  6. Step 6: Final answer
    x = 299,021.06

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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.