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Finding the Fourth Proportional to 78,960.27, 108,984.54 and 44,988.80

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Solution

The fourth proportional to 78,960.27, 108,984.54 and 44,988.80 is: 62,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,960.27 : 108,984.54 = 44,988.80 : x
  2. Step 2: Convert to fraction form
    78,960.27/108,984.54 = 44,988.80/x
  3. Step 3: Cross multiply
    78,960.27x = 108,984.54 × 44,988.80
  4. Step 4: Simplify right side
    78,960.27x = 4,903,083,128.23
  5. Step 5: Solve for x
    x = 4,903,083,128.23/78,960.27
  6. Step 6: Final answer
    x = 62,095.57

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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.