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Finding the Fourth Proportional to 18,783.64, 25,891.60 and 14,798.44

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Solution

The fourth proportional to 18,783.64, 25,891.60 and 14,798.44 is: 20,398.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.64 : 25,891.60 = 14,798.44 : x
  2. Step 2: Convert to fraction form
    18,783.64/25,891.60 = 14,798.44/x
  3. Step 3: Cross multiply
    18,783.64x = 25,891.60 × 14,798.44
  4. Step 4: Simplify right side
    18,783.64x = 383,155,289.10
  5. Step 5: Solve for x
    x = 383,155,289.10/18,783.64
  6. Step 6: Final answer
    x = 20,398.35

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Half scale
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Double scale
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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.