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Finding the Fourth Proportional to 73,147.32, 109,655.28 and 26,389.28

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Solution

The fourth proportional to 73,147.32, 109,655.28 and 26,389.28 is: 39,560.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,147.32 : 109,655.28 = 26,389.28 : x
  2. Step 2: Convert to fraction form
    73,147.32/109,655.28 = 26,389.28/x
  3. Step 3: Cross multiply
    73,147.32x = 109,655.28 × 26,389.28
  4. Step 4: Simplify right side
    73,147.32x = 2,893,723,887.40
  5. Step 5: Solve for x
    x = 2,893,723,887.40/73,147.32
  6. Step 6: Final answer
    x = 39,560.22

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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.