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Finding the Fourth Proportional to 496,698.75, 685,445.58 and 281,838.24

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Solution

The fourth proportional to 496,698.75, 685,445.58 and 281,838.24 is: 388,937.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,698.75 : 685,445.58 = 281,838.24 : x
  2. Step 2: Convert to fraction form
    496,698.75/685,445.58 = 281,838.24/x
  3. Step 3: Cross multiply
    496,698.75x = 685,445.58 × 281,838.24
  4. Step 4: Simplify right side
    496,698.75x = 193,184,775,882.98
  5. Step 5: Solve for x
    x = 193,184,775,882.98/496,698.75
  6. Step 6: Final answer
    x = 388,937.51

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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.