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Finding the Fourth Proportional to 18,894.52, 28,341.60 and 11,501.02

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Solution

The fourth proportional to 18,894.52, 28,341.60 and 11,501.02 is: 17,251.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.52 : 28,341.60 = 11,501.02 : x
  2. Step 2: Convert to fraction form
    18,894.52/28,341.60 = 11,501.02/x
  3. Step 3: Cross multiply
    18,894.52x = 28,341.60 × 11,501.02
  4. Step 4: Simplify right side
    18,894.52x = 325,957,308.43
  5. Step 5: Solve for x
    x = 325,957,308.43/18,894.52
  6. Step 6: Final answer
    x = 17,251.42

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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.