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Finding the Fourth Proportional to 8,811.88, 12,152.64 and 5,454.16

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Solution

The fourth proportional to 8,811.88, 12,152.64 and 5,454.16 is: 7,521.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.88 : 12,152.64 = 5,454.16 : x
  2. Step 2: Convert to fraction form
    8,811.88/12,152.64 = 5,454.16/x
  3. Step 3: Cross multiply
    8,811.88x = 12,152.64 × 5,454.16
  4. Step 4: Simplify right side
    8,811.88x = 66,282,442.98
  5. Step 5: Solve for x
    x = 66,282,442.98/8,811.88
  6. Step 6: Final answer
    x = 7,521.94

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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.