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Finding the Fourth Proportional to 8,572.50, 11,830.05 and 4,847.22

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Solution

The fourth proportional to 8,572.50, 11,830.05 and 4,847.22 is: 6,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.50 : 11,830.05 = 4,847.22 : x
  2. Step 2: Convert to fraction form
    8,572.50/11,830.05 = 4,847.22/x
  3. Step 3: Cross multiply
    8,572.50x = 11,830.05 × 4,847.22
  4. Step 4: Simplify right side
    8,572.50x = 57,342,854.96
  5. Step 5: Solve for x
    x = 57,342,854.96/8,572.50
  6. Step 6: Final answer
    x = 6,689.16

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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.