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Finding the Fourth Proportional to 496,706.77, 685,513.70 and 278,951.23

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Solution

The fourth proportional to 496,706.77, 685,513.70 and 278,951.23 is: 384,985.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,706.77 : 685,513.70 = 278,951.23 : x
  2. Step 2: Convert to fraction form
    496,706.77/685,513.70 = 278,951.23/x
  3. Step 3: Cross multiply
    496,706.77x = 685,513.70 × 278,951.23
  4. Step 4: Simplify right side
    496,706.77x = 191,224,889,796.85
  5. Step 5: Solve for x
    x = 191,224,889,796.85/496,706.77
  6. Step 6: Final answer
    x = 384,985.47

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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.