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Finding the Fourth Proportional to 19,639.56, 29,460.02 and 7,795.56

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Solution

The fourth proportional to 19,639.56, 29,460.02 and 7,795.56 is: 11,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.56 : 29,460.02 = 7,795.56 : x
  2. Step 2: Convert to fraction form
    19,639.56/29,460.02 = 7,795.56/x
  3. Step 3: Cross multiply
    19,639.56x = 29,460.02 × 7,795.56
  4. Step 4: Simplify right side
    19,639.56x = 229,657,314.53
  5. Step 5: Solve for x
    x = 229,657,314.53/19,639.56
  6. Step 6: Final answer
    x = 11,693.61

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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.