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Finding the Fourth Proportional to 18,979.44, 28,483.68 and 8,598.48

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Solution

The fourth proportional to 18,979.44, 28,483.68 and 8,598.48 is: 12,904.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.44 : 28,483.68 = 8,598.48 : x
  2. Step 2: Convert to fraction form
    18,979.44/28,483.68 = 8,598.48/x
  3. Step 3: Cross multiply
    18,979.44x = 28,483.68 × 8,598.48
  4. Step 4: Simplify right side
    18,979.44x = 244,916,352.81
  5. Step 5: Solve for x
    x = 244,916,352.81/18,979.44
  6. Step 6: Final answer
    x = 12,904.30

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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.