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Finding the Fourth Proportional to 472,418.78, 708,253.95 and 235,639.58

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Solution

The fourth proportional to 472,418.78, 708,253.95 and 235,639.58 is: 353,272.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,418.78 : 708,253.95 = 235,639.58 : x
  2. Step 2: Convert to fraction form
    472,418.78/708,253.95 = 235,639.58/x
  3. Step 3: Cross multiply
    472,418.78x = 708,253.95 × 235,639.58
  4. Step 4: Simplify right side
    472,418.78x = 166,892,663,311.34
  5. Step 5: Solve for x
    x = 166,892,663,311.34/472,418.78
  6. Step 6: Final answer
    x = 353,272.71

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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.