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Finding the Fourth Proportional to 620,291.40, 930,566.70 and 199,609.80

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Solution

The fourth proportional to 620,291.40, 930,566.70 and 199,609.80 is: 299,456.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,291.40 : 930,566.70 = 199,609.80 : x
  2. Step 2: Convert to fraction form
    620,291.40/930,566.70 = 199,609.80/x
  3. Step 3: Cross multiply
    620,291.40x = 930,566.70 × 199,609.80
  4. Step 4: Simplify right side
    620,291.40x = 185,750,232,873.66
  5. Step 5: Solve for x
    x = 185,750,232,873.66/620,291.40
  6. Step 6: Final answer
    x = 299,456.41

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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.