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Finding the Fourth Proportional to 25,955.32, 38,899.14 and 11,910.28

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Solution

The fourth proportional to 25,955.32, 38,899.14 and 11,910.28 is: 17,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,955.32 : 38,899.14 = 11,910.28 : x
  2. Step 2: Convert to fraction form
    25,955.32/38,899.14 = 11,910.28/x
  3. Step 3: Cross multiply
    25,955.32x = 38,899.14 × 11,910.28
  4. Step 4: Simplify right side
    25,955.32x = 463,299,649.16
  5. Step 5: Solve for x
    x = 463,299,649.16/25,955.32
  6. Step 6: Final answer
    x = 17,849.89

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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.