Home / 18,909,376.72-28,342,549.12-11,507,098.20

Finding the Fourth Proportional to 18,909,376.72, 28,342,549.12 and 11,507,098.20

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Solution

The fourth proportional to 18,909,376.72, 28,342,549.12 and 11,507,098.20 is: 17,247,553.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,376.72 : 28,342,549.12 = 11,507,098.20 : x
  2. Step 2: Convert to fraction form
    18,909,376.72/28,342,549.12 = 11,507,098.20/x
  3. Step 3: Cross multiply
    18,909,376.72x = 28,342,549.12 × 11,507,098.20
  4. Step 4: Simplify right side
    18,909,376.72x = 326,140,495,962,163.56
  5. Step 5: Solve for x
    x = 326,140,495,962,163.56/18,909,376.72
  6. Step 6: Final answer
    x = 17,247,553.99

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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.