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Finding the Fourth Proportional to 19,174.95, 28,750.68 and 7,474.50

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Solution

The fourth proportional to 19,174.95, 28,750.68 and 7,474.50 is: 11,207.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.95 : 28,750.68 = 7,474.50 : x
  2. Step 2: Convert to fraction form
    19,174.95/28,750.68 = 7,474.50/x
  3. Step 3: Cross multiply
    19,174.95x = 28,750.68 × 7,474.50
  4. Step 4: Simplify right side
    19,174.95x = 214,896,957.66
  5. Step 5: Solve for x
    x = 214,896,957.66/19,174.95
  6. Step 6: Final answer
    x = 11,207.17

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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.