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Finding the Fourth Proportional to 8,571.89, 11,828.65 and 4,794.40

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Solution

The fourth proportional to 8,571.89, 11,828.65 and 4,794.40 is: 6,615.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.89 : 11,828.65 = 4,794.40 : x
  2. Step 2: Convert to fraction form
    8,571.89/11,828.65 = 4,794.40/x
  3. Step 3: Cross multiply
    8,571.89x = 11,828.65 × 4,794.40
  4. Step 4: Simplify right side
    8,571.89x = 56,711,304.83
  5. Step 5: Solve for x
    x = 56,711,304.83/8,571.89
  6. Step 6: Final answer
    x = 6,615.96

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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.