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Finding the Fourth Proportional to 8,866.45, 12,235.44 and 5,722.66

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Solution

The fourth proportional to 8,866.45, 12,235.44 and 5,722.66 is: 7,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.45 : 12,235.44 = 5,722.66 : x
  2. Step 2: Convert to fraction form
    8,866.45/12,235.44 = 5,722.66/x
  3. Step 3: Cross multiply
    8,866.45x = 12,235.44 × 5,722.66
  4. Step 4: Simplify right side
    8,866.45x = 70,019,263.07
  5. Step 5: Solve for x
    x = 70,019,263.07/8,866.45
  6. Step 6: Final answer
    x = 7,897.10

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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.