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Finding the Fourth Proportional to 92,649,974.80, 138,880,483.80 and 54,291,744.40

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Solution

The fourth proportional to 92,649,974.80, 138,880,483.80 and 54,291,744.40 is: 81,382,253.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,649,974.80 : 138,880,483.80 = 54,291,744.40 : x
  2. Step 2: Convert to fraction form
    92,649,974.80/138,880,483.80 = 54,291,744.40/x
  3. Step 3: Cross multiply
    92,649,974.80x = 138,880,483.80 × 54,291,744.40
  4. Step 4: Simplify right side
    92,649,974.80x = 7,540,063,728,617,941
  5. Step 5: Solve for x
    x = 7,540,063,728,617,941/92,649,974.80
  6. Step 6: Final answer
    x = 81,382,253.42

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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.