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Finding the Fourth Proportional to 315,226.34, 472,573.38 and 146,659.64

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Solution

The fourth proportional to 315,226.34, 472,573.38 and 146,659.64 is: 219,865.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,226.34 : 472,573.38 = 146,659.64 : x
  2. Step 2: Convert to fraction form
    315,226.34/472,573.38 = 146,659.64/x
  3. Step 3: Cross multiply
    315,226.34x = 472,573.38 × 146,659.64
  4. Step 4: Simplify right side
    315,226.34x = 69,307,441,784.38
  5. Step 5: Solve for x
    x = 69,307,441,784.38/315,226.34
  6. Step 6: Final answer
    x = 219,865.64

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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.