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Finding the Fourth Proportional to 496,597.14, 685,256.64 and 278,755.92

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Solution

The fourth proportional to 496,597.14, 685,256.64 and 278,755.92 is: 384,656.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,597.14 : 685,256.64 = 278,755.92 : x
  2. Step 2: Convert to fraction form
    496,597.14/685,256.64 = 278,755.92/x
  3. Step 3: Cross multiply
    496,597.14x = 685,256.64 × 278,755.92
  4. Step 4: Simplify right side
    496,597.14x = 191,019,345,119.31
  5. Step 5: Solve for x
    x = 191,019,345,119.31/496,597.14
  6. Step 6: Final answer
    x = 384,656.56

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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.