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Finding the Fourth Proportional to 455,923.20, 685,051.20 and 404,601.60

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Solution

The fourth proportional to 455,923.20, 685,051.20 and 404,601.60 is: 607,937.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,923.20 : 685,051.20 = 404,601.60 : x
  2. Step 2: Convert to fraction form
    455,923.20/685,051.20 = 404,601.60/x
  3. Step 3: Cross multiply
    455,923.20x = 685,051.20 × 404,601.60
  4. Step 4: Simplify right side
    455,923.20x = 277,172,811,601.92
  5. Step 5: Solve for x
    x = 277,172,811,601.92/455,923.20
  6. Step 6: Final answer
    x = 607,937.50

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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.