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Finding the Fourth Proportional to 92,906.80, 128,084.43 and 63,834.28

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Solution

The fourth proportional to 92,906.80, 128,084.43 and 63,834.28 is: 88,004.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,906.80 : 128,084.43 = 63,834.28 : x
  2. Step 2: Convert to fraction form
    92,906.80/128,084.43 = 63,834.28/x
  3. Step 3: Cross multiply
    92,906.80x = 128,084.43 × 63,834.28
  4. Step 4: Simplify right side
    92,906.80x = 8,176,177,368.26
  5. Step 5: Solve for x
    x = 8,176,177,368.26/92,906.80
  6. Step 6: Final answer
    x = 88,004.08

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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.