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Finding the Fourth Proportional to 14,706.66, 20,295.45 and 8,742.90

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Solution

The fourth proportional to 14,706.66, 20,295.45 and 8,742.90 is: 12,065.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,706.66 : 20,295.45 = 8,742.90 : x
  2. Step 2: Convert to fraction form
    14,706.66/20,295.45 = 8,742.90/x
  3. Step 3: Cross multiply
    14,706.66x = 20,295.45 × 8,742.90
  4. Step 4: Simplify right side
    14,706.66x = 177,441,089.81
  5. Step 5: Solve for x
    x = 177,441,089.81/14,706.66
  6. Step 6: Final answer
    x = 12,065.36

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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.