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Finding the Fourth Proportional to 14,357.68, 21,542.08 and 6,961.60

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Solution

The fourth proportional to 14,357.68, 21,542.08 and 6,961.60 is: 10,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,357.68 : 21,542.08 = 6,961.60 : x
  2. Step 2: Convert to fraction form
    14,357.68/21,542.08 = 6,961.60/x
  3. Step 3: Cross multiply
    14,357.68x = 21,542.08 × 6,961.60
  4. Step 4: Simplify right side
    14,357.68x = 149,967,344.13
  5. Step 5: Solve for x
    x = 149,967,344.13/14,357.68
  6. Step 6: Final answer
    x = 10,445.10

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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.