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Finding the Fourth Proportional to 13,493,329.76, 20,239,978.92 and 4,395,412.67

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Solution

The fourth proportional to 13,493,329.76, 20,239,978.92 and 4,395,412.67 is: 6,593,113.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,493,329.76 : 20,239,978.92 = 4,395,412.67 : x
  2. Step 2: Convert to fraction form
    13,493,329.76/20,239,978.92 = 4,395,412.67/x
  3. Step 3: Cross multiply
    13,493,329.76x = 20,239,978.92 × 4,395,412.67
  4. Step 4: Simplify right side
    13,493,329.76x = 88,963,059,684,301.03
  5. Step 5: Solve for x
    x = 88,963,059,684,301.03/13,493,329.76
  6. Step 6: Final answer
    x = 6,593,113.88

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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.