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Finding the Fourth Proportional to 620,209.80, 930,573.90 and 199,614.60

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Solution

The fourth proportional to 620,209.80, 930,573.90 and 199,614.60 is: 299,505.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,209.80 : 930,573.90 = 199,614.60 : x
  2. Step 2: Convert to fraction form
    620,209.80/930,573.90 = 199,614.60/x
  3. Step 3: Cross multiply
    620,209.80x = 930,573.90 × 199,614.60
  4. Step 4: Simplify right side
    620,209.80x = 185,756,136,818.94
  5. Step 5: Solve for x
    x = 185,756,136,818.94/620,209.80
  6. Step 6: Final answer
    x = 299,505.32

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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.