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Finding the Fourth Proportional to 106,956.65, 147,615.75 and 61,625.88

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Solution

The fourth proportional to 106,956.65, 147,615.75 and 61,625.88 is: 85,052.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,956.65 : 147,615.75 = 61,625.88 : x
  2. Step 2: Convert to fraction form
    106,956.65/147,615.75 = 61,625.88/x
  3. Step 3: Cross multiply
    106,956.65x = 147,615.75 × 61,625.88
  4. Step 4: Simplify right side
    106,956.65x = 9,096,950,495.61
  5. Step 5: Solve for x
    x = 9,096,950,495.61/106,956.65
  6. Step 6: Final answer
    x = 85,052.69

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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.