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Finding the Fourth Proportional to 14,838.20, 20,734.60 and 14,838.20

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Solution

The fourth proportional to 14,838.20, 20,734.60 and 14,838.20 is: 20,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,838.20 : 20,734.60 = 14,838.20 : x
  2. Step 2: Convert to fraction form
    14,838.20/20,734.60 = 14,838.20/x
  3. Step 3: Cross multiply
    14,838.20x = 20,734.60 × 14,838.20
  4. Step 4: Simplify right side
    14,838.20x = 307,664,141.72
  5. Step 5: Solve for x
    x = 307,664,141.72/14,838.20
  6. Step 6: Final answer
    x = 20,734.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.