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Finding the Fourth Proportional to 124,881.20, 187,321.80 and 116,586.80

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Solution

The fourth proportional to 124,881.20, 187,321.80 and 116,586.80 is: 174,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,881.20 : 187,321.80 = 116,586.80 : x
  2. Step 2: Convert to fraction form
    124,881.20/187,321.80 = 116,586.80/x
  3. Step 3: Cross multiply
    124,881.20x = 187,321.80 × 116,586.80
  4. Step 4: Simplify right side
    124,881.20x = 21,839,249,232.24
  5. Step 5: Solve for x
    x = 21,839,249,232.24/124,881.20
  6. Step 6: Final answer
    x = 174,880.20

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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.