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Finding the Fourth Proportional to 8,809.90, 12,157.67 and 4,831.27

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Solution

The fourth proportional to 8,809.90, 12,157.67 and 4,831.27 is: 6,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.90 : 12,157.67 = 4,831.27 : x
  2. Step 2: Convert to fraction form
    8,809.90/12,157.67 = 4,831.27/x
  3. Step 3: Cross multiply
    8,809.90x = 12,157.67 × 4,831.27
  4. Step 4: Simplify right side
    8,809.90x = 58,736,968.02
  5. Step 5: Solve for x
    x = 58,736,968.02/8,809.90
  6. Step 6: Final answer
    x = 6,667.16

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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.