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Finding the Fourth Proportional to 8,572.75, 11,822.29 and 5,590.87

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Solution

The fourth proportional to 8,572.75, 11,822.29 and 5,590.87 is: 7,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.75 : 11,822.29 = 5,590.87 : x
  2. Step 2: Convert to fraction form
    8,572.75/11,822.29 = 5,590.87/x
  3. Step 3: Cross multiply
    8,572.75x = 11,822.29 × 5,590.87
  4. Step 4: Simplify right side
    8,572.75x = 66,096,886.49
  5. Step 5: Solve for x
    x = 66,096,886.49/8,572.75
  6. Step 6: Final answer
    x = 7,710.11

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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.