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Finding the Fourth Proportional to 92,135.88, 127,220.76 and 61,947.72

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Solution

The fourth proportional to 92,135.88, 127,220.76 and 61,947.72 is: 85,537.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,135.88 : 127,220.76 = 61,947.72 : x
  2. Step 2: Convert to fraction form
    92,135.88/127,220.76 = 61,947.72/x
  3. Step 3: Cross multiply
    92,135.88x = 127,220.76 × 61,947.72
  4. Step 4: Simplify right side
    92,135.88x = 7,881,036,018.67
  5. Step 5: Solve for x
    x = 7,881,036,018.67/92,135.88
  6. Step 6: Final answer
    x = 85,537.10

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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.