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Finding the Fourth Proportional to 21,753.46, 32,643.15 and 7,903.54

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Solution

The fourth proportional to 21,753.46, 32,643.15 and 7,903.54 is: 11,860.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.46 : 32,643.15 = 7,903.54 : x
  2. Step 2: Convert to fraction form
    21,753.46/32,643.15 = 7,903.54/x
  3. Step 3: Cross multiply
    21,753.46x = 32,643.15 × 7,903.54
  4. Step 4: Simplify right side
    21,753.46x = 257,996,239.02
  5. Step 5: Solve for x
    x = 257,996,239.02/21,753.46
  6. Step 6: Final answer
    x = 11,860.01

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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.