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Finding the Fourth Proportional to 8,706.07, 12,011.46 and 4,928.86

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Solution

The fourth proportional to 8,706.07, 12,011.46 and 4,928.86 is: 6,800.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.07 : 12,011.46 = 4,928.86 : x
  2. Step 2: Convert to fraction form
    8,706.07/12,011.46 = 4,928.86/x
  3. Step 3: Cross multiply
    8,706.07x = 12,011.46 × 4,928.86
  4. Step 4: Simplify right side
    8,706.07x = 59,202,804.74
  5. Step 5: Solve for x
    x = 59,202,804.74/8,706.07
  6. Step 6: Final answer
    x = 6,800.18

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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.