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Finding the Fourth Proportional to 124,419.60, 186,629.40 and 45,536.40

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Solution

The fourth proportional to 124,419.60, 186,629.40 and 45,536.40 is: 68,304.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,419.60 : 186,629.40 = 45,536.40 : x
  2. Step 2: Convert to fraction form
    124,419.60/186,629.40 = 45,536.40/x
  3. Step 3: Cross multiply
    124,419.60x = 186,629.40 × 45,536.40
  4. Step 4: Simplify right side
    124,419.60x = 8,498,431,010.16
  5. Step 5: Solve for x
    x = 8,498,431,010.16/124,419.60
  6. Step 6: Final answer
    x = 68,304.60

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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.