Home / 19,320,901.20-28,981,351.80-11,762,629.20

Finding the Fourth Proportional to 19,320,901.20, 28,981,351.80 and 11,762,629.20

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Solution

The fourth proportional to 19,320,901.20, 28,981,351.80 and 11,762,629.20 is: 17,643,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320,901.20 : 28,981,351.80 = 11,762,629.20 : x
  2. Step 2: Convert to fraction form
    19,320,901.20/28,981,351.80 = 11,762,629.20/x
  3. Step 3: Cross multiply
    19,320,901.20x = 28,981,351.80 × 11,762,629.20
  4. Step 4: Simplify right side
    19,320,901.20x = 340,896,894,938,152.56
  5. Step 5: Solve for x
    x = 340,896,894,938,152.56/19,320,901.20
  6. Step 6: Final answer
    x = 17,643,943.80

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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.