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Finding the Fourth Proportional to 124,435.40, 186,662.88 and 61,289.48

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Solution

The fourth proportional to 124,435.40, 186,662.88 and 61,289.48 is: 91,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,435.40 : 186,662.88 = 61,289.48 : x
  2. Step 2: Convert to fraction form
    124,435.40/186,662.88 = 61,289.48/x
  3. Step 3: Cross multiply
    124,435.40x = 186,662.88 × 61,289.48
  4. Step 4: Simplify right side
    124,435.40x = 11,440,470,850.50
  5. Step 5: Solve for x
    x = 11,440,470,850.50/124,435.40
  6. Step 6: Final answer
    x = 91,939.04

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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.