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Finding the Fourth Proportional to 25,458.30, 38,190.04 and 8,818.30

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Solution

The fourth proportional to 25,458.30, 38,190.04 and 8,818.30 is: 13,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,458.30 : 38,190.04 = 8,818.30 : x
  2. Step 2: Convert to fraction form
    25,458.30/38,190.04 = 8,818.30/x
  3. Step 3: Cross multiply
    25,458.30x = 38,190.04 × 8,818.30
  4. Step 4: Simplify right side
    25,458.30x = 336,771,229.73
  5. Step 5: Solve for x
    x = 336,771,229.73/25,458.30
  6. Step 6: Final answer
    x = 13,228.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.