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Finding the Fourth Proportional to 361,281.12, 541,722.60 and 124,428.48

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Solution

The fourth proportional to 361,281.12, 541,722.60 and 124,428.48 is: 186,574.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,281.12 : 541,722.60 = 124,428.48 : x
  2. Step 2: Convert to fraction form
    361,281.12/541,722.60 = 124,428.48/x
  3. Step 3: Cross multiply
    361,281.12x = 541,722.60 × 124,428.48
  4. Step 4: Simplify right side
    361,281.12x = 67,405,719,699.65
  5. Step 5: Solve for x
    x = 67,405,719,699.65/361,281.12
  6. Step 6: Final answer
    x = 186,574.16

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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.