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Finding the Fourth Proportional to 61,921.65, 85,450.14 and 35,066.70

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Solution

The fourth proportional to 61,921.65, 85,450.14 and 35,066.70 is: 48,391.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,921.65 : 85,450.14 = 35,066.70 : x
  2. Step 2: Convert to fraction form
    61,921.65/85,450.14 = 35,066.70/x
  3. Step 3: Cross multiply
    61,921.65x = 85,450.14 × 35,066.70
  4. Step 4: Simplify right side
    61,921.65x = 2,996,454,424.34
  5. Step 5: Solve for x
    x = 2,996,454,424.34/61,921.65
  6. Step 6: Final answer
    x = 48,391.06

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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.