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Finding the Fourth Proportional to 14,655.64, 20,224.80 and 7,941.32

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Solution

The fourth proportional to 14,655.64, 20,224.80 and 7,941.32 is: 10,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,655.64 : 20,224.80 = 7,941.32 : x
  2. Step 2: Convert to fraction form
    14,655.64/20,224.80 = 7,941.32/x
  3. Step 3: Cross multiply
    14,655.64x = 20,224.80 × 7,941.32
  4. Step 4: Simplify right side
    14,655.64x = 160,611,608.74
  5. Step 5: Solve for x
    x = 160,611,608.74/14,655.64
  6. Step 6: Final answer
    x = 10,959.03

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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.