Home / 19,309,391.20-28,964,086.80-12,590,927.20

Finding the Fourth Proportional to 19,309,391.20, 28,964,086.80 and 12,590,927.20

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Solution

The fourth proportional to 19,309,391.20, 28,964,086.80 and 12,590,927.20 is: 18,886,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309,391.20 : 28,964,086.80 = 12,590,927.20 : x
  2. Step 2: Convert to fraction form
    19,309,391.20/28,964,086.80 = 12,590,927.20/x
  3. Step 3: Cross multiply
    19,309,391.20x = 28,964,086.80 × 12,590,927.20
  4. Step 4: Simplify right side
    19,309,391.20x = 364,684,708,313,280.94
  5. Step 5: Solve for x
    x = 364,684,708,313,280.94/19,309,391.20
  6. Step 6: Final answer
    x = 18,886,390.80

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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.