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Finding the Fourth Proportional to 124,311.28, 186,629.52 and 73,802.51

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Solution

The fourth proportional to 124,311.28, 186,629.52 and 73,802.51 is: 110,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,311.28 : 186,629.52 = 73,802.51 : x
  2. Step 2: Convert to fraction form
    124,311.28/186,629.52 = 73,802.51/x
  3. Step 3: Cross multiply
    124,311.28x = 186,629.52 × 73,802.51
  4. Step 4: Simplify right side
    124,311.28x = 13,773,727,016.10
  5. Step 5: Solve for x
    x = 13,773,727,016.10/124,311.28
  6. Step 6: Final answer
    x = 110,800.30

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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.