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Finding the Fourth Proportional to 330,912.48, 495,925.92 and 162,174.72

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Solution

The fourth proportional to 330,912.48, 495,925.92 and 162,174.72 is: 243,045.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,912.48 : 495,925.92 = 162,174.72 : x
  2. Step 2: Convert to fraction form
    330,912.48/495,925.92 = 162,174.72/x
  3. Step 3: Cross multiply
    330,912.48x = 495,925.92 × 162,174.72
  4. Step 4: Simplify right side
    330,912.48x = 80,426,647,216.74
  5. Step 5: Solve for x
    x = 80,426,647,216.74/330,912.48
  6. Step 6: Final answer
    x = 243,045.07

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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.