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Finding the Fourth Proportional to 18,894.02, 28,342.62 and 5,746.50

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Solution

The fourth proportional to 18,894.02, 28,342.62 and 5,746.50 is: 8,620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.02 : 28,342.62 = 5,746.50 : x
  2. Step 2: Convert to fraction form
    18,894.02/28,342.62 = 5,746.50/x
  3. Step 3: Cross multiply
    18,894.02x = 28,342.62 × 5,746.50
  4. Step 4: Simplify right side
    18,894.02x = 162,870,865.83
  5. Step 5: Solve for x
    x = 162,870,865.83/18,894.02
  6. Step 6: Final answer
    x = 8,620.24

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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.