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Finding the Fourth Proportional to 79,166.50, 109,247.30 and 43,355.58

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Solution

The fourth proportional to 79,166.50, 109,247.30 and 43,355.58 is: 59,829.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,166.50 : 109,247.30 = 43,355.58 : x
  2. Step 2: Convert to fraction form
    79,166.50/109,247.30 = 43,355.58/x
  3. Step 3: Cross multiply
    79,166.50x = 109,247.30 × 43,355.58
  4. Step 4: Simplify right side
    79,166.50x = 4,736,480,054.93
  5. Step 5: Solve for x
    x = 4,736,480,054.93/79,166.50
  6. Step 6: Final answer
    x = 59,829.35

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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.