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Finding the Fourth Proportional to 18,798.47, 25,940.68 and 10,300.49

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Solution

The fourth proportional to 18,798.47, 25,940.68 and 10,300.49 is: 14,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.47 : 25,940.68 = 10,300.49 : x
  2. Step 2: Convert to fraction form
    18,798.47/25,940.68 = 10,300.49/x
  3. Step 3: Cross multiply
    18,798.47x = 25,940.68 × 10,300.49
  4. Step 4: Simplify right side
    18,798.47x = 267,201,533.73
  5. Step 5: Solve for x
    x = 267,201,533.73/18,798.47
  6. Step 6: Final answer
    x = 14,214.01

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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.