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Finding the Fourth Proportional to 21,955.96, 32,933.58 and 5,315.88

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Solution

The fourth proportional to 21,955.96, 32,933.58 and 5,315.88 is: 7,973.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.96 : 32,933.58 = 5,315.88 : x
  2. Step 2: Convert to fraction form
    21,955.96/32,933.58 = 5,315.88/x
  3. Step 3: Cross multiply
    21,955.96x = 32,933.58 × 5,315.88
  4. Step 4: Simplify right side
    21,955.96x = 175,070,959.25
  5. Step 5: Solve for x
    x = 175,070,959.25/21,955.96
  6. Step 6: Final answer
    x = 7,973.73

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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.