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Finding the Fourth Proportional to 620,195.80, 930,293.70 and 609,698.20

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Solution

The fourth proportional to 620,195.80, 930,293.70 and 609,698.20 is: 914,547.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,195.80 : 930,293.70 = 609,698.20 : x
  2. Step 2: Convert to fraction form
    620,195.80/930,293.70 = 609,698.20/x
  3. Step 3: Cross multiply
    620,195.80x = 930,293.70 × 609,698.20
  4. Step 4: Simplify right side
    620,195.80x = 567,198,394,361.34
  5. Step 5: Solve for x
    x = 567,198,394,361.34/620,195.80
  6. Step 6: Final answer
    x = 914,547.30

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Double scale
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Similar ratio
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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.