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Finding the Fourth Proportional to 83,992,990.80, 125,989,486.20 and 23,408,716.80

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Solution

The fourth proportional to 83,992,990.80, 125,989,486.20 and 23,408,716.80 is: 35,113,075.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,992,990.80 : 125,989,486.20 = 23,408,716.80 : x
  2. Step 2: Convert to fraction form
    83,992,990.80/125,989,486.20 = 23,408,716.80/x
  3. Step 3: Cross multiply
    83,992,990.80x = 125,989,486.20 × 23,408,716.80
  4. Step 4: Simplify right side
    83,992,990.80x = 2,949,252,202,233,308.50
  5. Step 5: Solve for x
    x = 2,949,252,202,233,308.50/83,992,990.80
  6. Step 6: Final answer
    x = 35,113,075.20

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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.