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Finding the Fourth Proportional to 496,605.16, 685,267.68 and 278,763.92

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Solution

The fourth proportional to 496,605.16, 685,267.68 and 278,763.92 is: 384,667.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,605.16 : 685,267.68 = 278,763.92 : x
  2. Step 2: Convert to fraction form
    496,605.16/685,267.68 = 278,763.92/x
  3. Step 3: Cross multiply
    496,605.16x = 685,267.68 × 278,763.92
  4. Step 4: Simplify right side
    496,605.16x = 191,027,904,726.11
  5. Step 5: Solve for x
    x = 191,027,904,726.11/496,605.16
  6. Step 6: Final answer
    x = 384,667.58

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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.