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Finding the Fourth Proportional to 11,055.70, 16,583.55 and 8,868.70

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Solution

The fourth proportional to 11,055.70, 16,583.55 and 8,868.70 is: 13,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,055.70 : 16,583.55 = 8,868.70 : x
  2. Step 2: Convert to fraction form
    11,055.70/16,583.55 = 8,868.70/x
  3. Step 3: Cross multiply
    11,055.70x = 16,583.55 × 8,868.70
  4. Step 4: Simplify right side
    11,055.70x = 147,074,529.89
  5. Step 5: Solve for x
    x = 147,074,529.89/11,055.70
  6. Step 6: Final answer
    x = 13,303.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.