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Finding the Fourth Proportional to 14,842.64, 20,483.82 and 8,555.42

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Solution

The fourth proportional to 14,842.64, 20,483.82 and 8,555.42 is: 11,807.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,842.64 : 20,483.82 = 8,555.42 : x
  2. Step 2: Convert to fraction form
    14,842.64/20,483.82 = 8,555.42/x
  3. Step 3: Cross multiply
    14,842.64x = 20,483.82 × 8,555.42
  4. Step 4: Simplify right side
    14,842.64x = 175,247,683.30
  5. Step 5: Solve for x
    x = 175,247,683.30/14,842.64
  6. Step 6: Final answer
    x = 11,807.04

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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.