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Finding the Fourth Proportional to 19,095.75, 28,650.92 and 7,409.88

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Solution

The fourth proportional to 19,095.75, 28,650.92 and 7,409.88 is: 11,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,095.75 : 28,650.92 = 7,409.88 : x
  2. Step 2: Convert to fraction form
    19,095.75/28,650.92 = 7,409.88/x
  3. Step 3: Cross multiply
    19,095.75x = 28,650.92 × 7,409.88
  4. Step 4: Simplify right side
    19,095.75x = 212,299,842.04
  5. Step 5: Solve for x
    x = 212,299,842.04/19,095.75
  6. Step 6: Final answer
    x = 11,117.65

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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.