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Finding the Fourth Proportional to 132,960.96, 183,486.64 and 72,532.88

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Solution

The fourth proportional to 132,960.96, 183,486.64 and 72,532.88 is: 100,095.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,960.96 : 183,486.64 = 72,532.88 : x
  2. Step 2: Convert to fraction form
    132,960.96/183,486.64 = 72,532.88/x
  3. Step 3: Cross multiply
    132,960.96x = 183,486.64 × 72,532.88
  4. Step 4: Simplify right side
    132,960.96x = 13,308,814,440.72
  5. Step 5: Solve for x
    x = 13,308,814,440.72/132,960.96
  6. Step 6: Final answer
    x = 100,095.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.