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Finding the Fourth Proportional to 71,363.12, 106,978.44 and 26,359.60

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Solution

The fourth proportional to 71,363.12, 106,978.44 and 26,359.60 is: 39,514.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,363.12 : 106,978.44 = 26,359.60 : x
  2. Step 2: Convert to fraction form
    71,363.12/106,978.44 = 26,359.60/x
  3. Step 3: Cross multiply
    71,363.12x = 106,978.44 × 26,359.60
  4. Step 4: Simplify right side
    71,363.12x = 2,819,908,887.02
  5. Step 5: Solve for x
    x = 2,819,908,887.02/71,363.12
  6. Step 6: Final answer
    x = 39,514.93

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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.