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Finding the Fourth Proportional to 19,754.23, 29,631.35 and 7,913.38

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Solution

The fourth proportional to 19,754.23, 29,631.35 and 7,913.38 is: 11,870.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,754.23 : 29,631.35 = 7,913.38 : x
  2. Step 2: Convert to fraction form
    19,754.23/29,631.35 = 7,913.38/x
  3. Step 3: Cross multiply
    19,754.23x = 29,631.35 × 7,913.38
  4. Step 4: Simplify right side
    19,754.23x = 234,484,132.46
  5. Step 5: Solve for x
    x = 234,484,132.46/19,754.23
  6. Step 6: Final answer
    x = 11,870.07

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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.