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Finding the Fourth Proportional to 38,716.59, 53,435.12 and 21,954.99

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Solution

The fourth proportional to 38,716.59, 53,435.12 and 21,954.99 is: 30,301.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,716.59 : 53,435.12 = 21,954.99 : x
  2. Step 2: Convert to fraction form
    38,716.59/53,435.12 = 21,954.99/x
  3. Step 3: Cross multiply
    38,716.59x = 53,435.12 × 21,954.99
  4. Step 4: Simplify right side
    38,716.59x = 1,173,167,415.47
  5. Step 5: Solve for x
    x = 1,173,167,415.47/38,716.59
  6. Step 6: Final answer
    x = 30,301.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.