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Finding the Fourth Proportional to 19,043.57, 28,572.19 and 8,512.71

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Solution

The fourth proportional to 19,043.57, 28,572.19 and 8,512.71 is: 12,772.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,043.57 : 28,572.19 = 8,512.71 : x
  2. Step 2: Convert to fraction form
    19,043.57/28,572.19 = 8,512.71/x
  3. Step 3: Cross multiply
    19,043.57x = 28,572.19 × 8,512.71
  4. Step 4: Simplify right side
    19,043.57x = 243,226,582.11
  5. Step 5: Solve for x
    x = 243,226,582.11/19,043.57
  6. Step 6: Final answer
    x = 12,772.11

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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.