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Finding the Fourth Proportional to 8,722.79, 12,017.11 and 6,065.58

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Solution

The fourth proportional to 8,722.79, 12,017.11 and 6,065.58 is: 8,356.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.79 : 12,017.11 = 6,065.58 : x
  2. Step 2: Convert to fraction form
    8,722.79/12,017.11 = 6,065.58/x
  3. Step 3: Cross multiply
    8,722.79x = 12,017.11 × 6,065.58
  4. Step 4: Simplify right side
    8,722.79x = 72,890,783.35
  5. Step 5: Solve for x
    x = 72,890,783.35/8,722.79
  6. Step 6: Final answer
    x = 8,356.36

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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.