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Finding the Fourth Proportional to 25,856.17, 38,790.69 and 7,388.17

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Solution

The fourth proportional to 25,856.17, 38,790.69 and 7,388.17 is: 11,084.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,856.17 : 38,790.69 = 7,388.17 : x
  2. Step 2: Convert to fraction form
    25,856.17/38,790.69 = 7,388.17/x
  3. Step 3: Cross multiply
    25,856.17x = 38,790.69 × 7,388.17
  4. Step 4: Simplify right side
    25,856.17x = 286,592,212.14
  5. Step 5: Solve for x
    x = 286,592,212.14/25,856.17
  6. Step 6: Final answer
    x = 11,084.09

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1.5x scale

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.