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Finding the Fourth Proportional to 21,993.60, 32,941.80 and 11,593.20

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Solution

The fourth proportional to 21,993.60, 32,941.80 and 11,593.20 is: 17,364.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.60 : 32,941.80 = 11,593.20 : x
  2. Step 2: Convert to fraction form
    21,993.60/32,941.80 = 11,593.20/x
  3. Step 3: Cross multiply
    21,993.60x = 32,941.80 × 11,593.20
  4. Step 4: Simplify right side
    21,993.60x = 381,900,875.76
  5. Step 5: Solve for x
    x = 381,900,875.76/21,993.60
  6. Step 6: Final answer
    x = 17,364.18

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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.