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Finding the Fourth Proportional to 647,784.56, 893,944.08 and 361,323.04

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Solution

The fourth proportional to 647,784.56, 893,944.08 and 361,323.04 is: 498,626.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,784.56 : 893,944.08 = 361,323.04 : x
  2. Step 2: Convert to fraction form
    647,784.56/893,944.08 = 361,323.04/x
  3. Step 3: Cross multiply
    647,784.56x = 893,944.08 × 361,323.04
  4. Step 4: Simplify right side
    647,784.56x = 323,002,592,575.60
  5. Step 5: Solve for x
    x = 323,002,592,575.60/647,784.56
  6. Step 6: Final answer
    x = 498,626.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.