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Finding the Fourth Proportional to 79,041.90, 109,080.63 and 45,055.52

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Solution

The fourth proportional to 79,041.90, 109,080.63 and 45,055.52 is: 62,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,041.90 : 109,080.63 = 45,055.52 : x
  2. Step 2: Convert to fraction form
    79,041.90/109,080.63 = 45,055.52/x
  3. Step 3: Cross multiply
    79,041.90x = 109,080.63 × 45,055.52
  4. Step 4: Simplify right side
    79,041.90x = 4,914,683,961.17
  5. Step 5: Solve for x
    x = 4,914,683,961.17/79,041.90
  6. Step 6: Final answer
    x = 62,178.21

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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.