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Finding the Fourth Proportional to 176,659.60, 264,989.40 and 71,424.40

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Solution

The fourth proportional to 176,659.60, 264,989.40 and 71,424.40 is: 107,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,659.60 : 264,989.40 = 71,424.40 : x
  2. Step 2: Convert to fraction form
    176,659.60/264,989.40 = 71,424.40/x
  3. Step 3: Cross multiply
    176,659.60x = 264,989.40 × 71,424.40
  4. Step 4: Simplify right side
    176,659.60x = 18,926,708,901.36
  5. Step 5: Solve for x
    x = 18,926,708,901.36/176,659.60
  6. Step 6: Final answer
    x = 107,136.60

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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.