Home / 20,998,768.80-31,498,153.20-19,203,679.20

Finding the Fourth Proportional to 20,998,768.80, 31,498,153.20 and 19,203,679.20

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Solution

The fourth proportional to 20,998,768.80, 31,498,153.20 and 19,203,679.20 is: 28,805,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998,768.80 : 31,498,153.20 = 19,203,679.20 : x
  2. Step 2: Convert to fraction form
    20,998,768.80/31,498,153.20 = 19,203,679.20/x
  3. Step 3: Cross multiply
    20,998,768.80x = 31,498,153.20 × 19,203,679.20
  4. Step 4: Simplify right side
    20,998,768.80x = 604,880,429,445,253.38
  5. Step 5: Solve for x
    x = 604,880,429,445,253.38/20,998,768.80
  6. Step 6: Final answer
    x = 28,805,518.80

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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.