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Finding the Fourth Proportional to 79,247.26, 109,362.48 and 47,417.50

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Solution

The fourth proportional to 79,247.26, 109,362.48 and 47,417.50 is: 65,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,247.26 : 109,362.48 = 47,417.50 : x
  2. Step 2: Convert to fraction form
    79,247.26/109,362.48 = 47,417.50/x
  3. Step 3: Cross multiply
    79,247.26x = 109,362.48 × 47,417.50
  4. Step 4: Simplify right side
    79,247.26x = 5,185,695,395.40
  5. Step 5: Solve for x
    x = 5,185,695,395.40/79,247.26
  6. Step 6: Final answer
    x = 65,436.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.