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Finding the Fourth Proportional to 626,375.22, 939,615.54 and 199,971.90

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Solution

The fourth proportional to 626,375.22, 939,615.54 and 199,971.90 is: 299,974.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,375.22 : 939,615.54 = 199,971.90 : x
  2. Step 2: Convert to fraction form
    626,375.22/939,615.54 = 199,971.90/x
  3. Step 3: Cross multiply
    626,375.22x = 939,615.54 × 199,971.90
  4. Step 4: Simplify right side
    626,375.22x = 187,896,704,803.33
  5. Step 5: Solve for x
    x = 187,896,704,803.33/626,375.22
  6. Step 6: Final answer
    x = 299,974.68

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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.