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Finding the Fourth Proportional to 8,809.10, 12,157.32 and 4,830.99

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Solution

The fourth proportional to 8,809.10, 12,157.32 and 4,830.99 is: 6,667.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.10 : 12,157.32 = 4,830.99 : x
  2. Step 2: Convert to fraction form
    8,809.10/12,157.32 = 4,830.99/x
  3. Step 3: Cross multiply
    8,809.10x = 12,157.32 × 4,830.99
  4. Step 4: Simplify right side
    8,809.10x = 58,731,830.56
  5. Step 5: Solve for x
    x = 58,731,830.56/8,809.10
  6. Step 6: Final answer
    x = 6,667.18

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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.