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Finding the Fourth Proportional to 92,877.10, 128,190.81 and 61,048.96

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Solution

The fourth proportional to 92,877.10, 128,190.81 and 61,048.96 is: 84,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,877.10 : 128,190.81 = 61,048.96 : x
  2. Step 2: Convert to fraction form
    92,877.10/128,190.81 = 61,048.96/x
  3. Step 3: Cross multiply
    92,877.10x = 128,190.81 × 61,048.96
  4. Step 4: Simplify right side
    92,877.10x = 7,825,915,632.06
  5. Step 5: Solve for x
    x = 7,825,915,632.06/92,877.10
  6. Step 6: Final answer
    x = 84,260.98

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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.