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Finding the Fourth Proportional to 107,010.66, 147,676.26 and 61,687.82

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Solution

The fourth proportional to 107,010.66, 147,676.26 and 61,687.82 is: 85,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,010.66 : 147,676.26 = 61,687.82 : x
  2. Step 2: Convert to fraction form
    107,010.66/147,676.26 = 61,687.82/x
  3. Step 3: Cross multiply
    107,010.66x = 147,676.26 × 61,687.82
  4. Step 4: Simplify right side
    107,010.66x = 9,109,827,145.67
  5. Step 5: Solve for x
    x = 9,109,827,145.67/107,010.66
  6. Step 6: Final answer
    x = 85,130.09

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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.