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Finding the Fourth Proportional to 79,706.16, 109,990.62 and 43,897.68

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Solution

The fourth proportional to 79,706.16, 109,990.62 and 43,897.68 is: 60,576.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,706.16 : 109,990.62 = 43,897.68 : x
  2. Step 2: Convert to fraction form
    79,706.16/109,990.62 = 43,897.68/x
  3. Step 3: Cross multiply
    79,706.16x = 109,990.62 × 43,897.68
  4. Step 4: Simplify right side
    79,706.16x = 4,828,333,039.76
  5. Step 5: Solve for x
    x = 4,828,333,039.76/79,706.16
  6. Step 6: Final answer
    x = 60,576.66

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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.