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Finding the Fourth Proportional to 7,408,978.58, 11,113,405.44 and 5,791,108.27

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Solution

The fourth proportional to 7,408,978.58, 11,113,405.44 and 5,791,108.27 is: 8,686,613.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408,978.58 : 11,113,405.44 = 5,791,108.27 : x
  2. Step 2: Convert to fraction form
    7,408,978.58/11,113,405.44 = 5,791,108.27/x
  3. Step 3: Cross multiply
    7,408,978.58x = 11,113,405.44 × 5,791,108.27
  4. Step 4: Simplify right side
    7,408,978.58x = 64,358,934,165,924.76
  5. Step 5: Solve for x
    x = 64,358,934,165,924.76/7,408,978.58
  6. Step 6: Final answer
    x = 8,686,613.61

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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.