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Finding the Fourth Proportional to 92,975.36, 128,305.49 and 52,696.74

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Solution

The fourth proportional to 92,975.36, 128,305.49 and 52,696.74 is: 72,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,975.36 : 128,305.49 = 52,696.74 : x
  2. Step 2: Convert to fraction form
    92,975.36/128,305.49 = 52,696.74/x
  3. Step 3: Cross multiply
    92,975.36x = 128,305.49 × 52,696.74
  4. Step 4: Simplify right side
    92,975.36x = 6,761,280,783.62
  5. Step 5: Solve for x
    x = 6,761,280,783.62/92,975.36
  6. Step 6: Final answer
    x = 72,721.21

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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.