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Finding the Fourth Proportional to 79,080.60, 118,448.10 and 61,411.80

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Solution

The fourth proportional to 79,080.60, 118,448.10 and 61,411.80 is: 91,983.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,080.60 : 118,448.10 = 61,411.80 : x
  2. Step 2: Convert to fraction form
    79,080.60/118,448.10 = 61,411.80/x
  3. Step 3: Cross multiply
    79,080.60x = 118,448.10 × 61,411.80
  4. Step 4: Simplify right side
    79,080.60x = 7,274,111,027.58
  5. Step 5: Solve for x
    x = 7,274,111,027.58/79,080.60
  6. Step 6: Final answer
    x = 91,983.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.