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Finding the Fourth Proportional to 11,117.64, 16,664.78 and 5,267.32

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Solution

The fourth proportional to 11,117.64, 16,664.78 and 5,267.32 is: 7,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.64 : 16,664.78 = 5,267.32 : x
  2. Step 2: Convert to fraction form
    11,117.64/16,664.78 = 5,267.32/x
  3. Step 3: Cross multiply
    11,117.64x = 16,664.78 × 5,267.32
  4. Step 4: Simplify right side
    11,117.64x = 87,778,728.99
  5. Step 5: Solve for x
    x = 87,778,728.99/11,117.64
  6. Step 6: Final answer
    x = 7,895.45

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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.