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Finding the Fourth Proportional to 124,632.90, 186,912.90 and 44,661.60

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Solution

The fourth proportional to 124,632.90, 186,912.90 and 44,661.60 is: 66,979.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,632.90 : 186,912.90 = 44,661.60 : x
  2. Step 2: Convert to fraction form
    124,632.90/186,912.90 = 44,661.60/x
  3. Step 3: Cross multiply
    124,632.90x = 186,912.90 × 44,661.60
  4. Step 4: Simplify right side
    124,632.90x = 8,347,829,174.64
  5. Step 5: Solve for x
    x = 8,347,829,174.64/124,632.90
  6. Step 6: Final answer
    x = 66,979.34

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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.