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Finding the Fourth Proportional to 5,752,851.70, 7,938,885.36 and 3,139,407.46

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Solution

The fourth proportional to 5,752,851.70, 7,938,885.36 and 3,139,407.46 is: 4,332,355.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,752,851.70 : 7,938,885.36 = 3,139,407.46 : x
  2. Step 2: Convert to fraction form
    5,752,851.70/7,938,885.36 = 3,139,407.46/x
  3. Step 3: Cross multiply
    5,752,851.70x = 7,938,885.36 × 3,139,407.46
  4. Step 4: Simplify right side
    5,752,851.70x = 24,923,395,923,268.79
  5. Step 5: Solve for x
    x = 24,923,395,923,268.79/5,752,851.70
  6. Step 6: Final answer
    x = 4,332,355.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.