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Finding the Fourth Proportional to 366,350.98, 505,311.88 and 257,685.78

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Solution

The fourth proportional to 366,350.98, 505,311.88 and 257,685.78 is: 355,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,350.98 : 505,311.88 = 257,685.78 : x
  2. Step 2: Convert to fraction form
    366,350.98/505,311.88 = 257,685.78/x
  3. Step 3: Cross multiply
    366,350.98x = 505,311.88 × 257,685.78
  4. Step 4: Simplify right side
    366,350.98x = 130,211,685,941.07
  5. Step 5: Solve for x
    x = 130,211,685,941.07/366,350.98
  6. Step 6: Final answer
    x = 355,428.79

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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.