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Finding the Fourth Proportional to 18,543.68, 25,533.60 and 17,057.60

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Solution

The fourth proportional to 18,543.68, 25,533.60 and 17,057.60 is: 23,487.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,543.68 : 25,533.60 = 17,057.60 : x
  2. Step 2: Convert to fraction form
    18,543.68/25,533.60 = 17,057.60/x
  3. Step 3: Cross multiply
    18,543.68x = 25,533.60 × 17,057.60
  4. Step 4: Simplify right side
    18,543.68x = 435,541,935.36
  5. Step 5: Solve for x
    x = 435,541,935.36/18,543.68
  6. Step 6: Final answer
    x = 23,487.35

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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.