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Finding the Fourth Proportional to 61,159.32, 91,644.48 and 51,755.76

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Solution

The fourth proportional to 61,159.32, 91,644.48 and 51,755.76 is: 77,553.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,159.32 : 91,644.48 = 51,755.76 : x
  2. Step 2: Convert to fraction form
    61,159.32/91,644.48 = 51,755.76/x
  3. Step 3: Cross multiply
    61,159.32x = 91,644.48 × 51,755.76
  4. Step 4: Simplify right side
    61,159.32x = 4,743,129,712.20
  5. Step 5: Solve for x
    x = 4,743,129,712.20/61,159.32
  6. Step 6: Final answer
    x = 77,553.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.