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Finding the Fourth Proportional to 8,585.61, 11,847.35 and 4,859.61

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Solution

The fourth proportional to 8,585.61, 11,847.35 and 4,859.61 is: 6,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.61 : 11,847.35 = 4,859.61 : x
  2. Step 2: Convert to fraction form
    8,585.61/11,847.35 = 4,859.61/x
  3. Step 3: Cross multiply
    8,585.61x = 11,847.35 × 4,859.61
  4. Step 4: Simplify right side
    8,585.61x = 57,573,476.24
  5. Step 5: Solve for x
    x = 57,573,476.24/8,585.61
  6. Step 6: Final answer
    x = 6,705.81

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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.