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Finding the Fourth Proportional to 45,794.40, 68,734.80 and 28,298.40

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Solution

The fourth proportional to 45,794.40, 68,734.80 and 28,298.40 is: 42,474.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,794.40 : 68,734.80 = 28,298.40 : x
  2. Step 2: Convert to fraction form
    45,794.40/68,734.80 = 28,298.40/x
  3. Step 3: Cross multiply
    45,794.40x = 68,734.80 × 28,298.40
  4. Step 4: Simplify right side
    45,794.40x = 1,945,084,864.32
  5. Step 5: Solve for x
    x = 1,945,084,864.32/45,794.40
  6. Step 6: Final answer
    x = 42,474.30

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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.