Home / 13,920,775.28-19,212,978.72-8,119,556.84

Finding the Fourth Proportional to 13,920,775.28, 19,212,978.72 and 8,119,556.84

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Solution

The fourth proportional to 13,920,775.28, 19,212,978.72 and 8,119,556.84 is: 11,206,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920,775.28 : 19,212,978.72 = 8,119,556.84 : x
  2. Step 2: Convert to fraction form
    13,920,775.28/19,212,978.72 = 8,119,556.84/x
  3. Step 3: Cross multiply
    13,920,775.28x = 19,212,978.72 × 8,119,556.84
  4. Step 4: Simplify right side
    13,920,775.28x = 156,000,872,782,750.44
  5. Step 5: Solve for x
    x = 156,000,872,782,750.44/13,920,775.28
  6. Step 6: Final answer
    x = 11,206,335.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.