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Finding the Fourth Proportional to 624,172.32, 862,239.60 and 496,684.80

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Solution

The fourth proportional to 624,172.32, 862,239.60 and 496,684.80 is: 686,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,172.32 : 862,239.60 = 496,684.80 : x
  2. Step 2: Convert to fraction form
    624,172.32/862,239.60 = 496,684.80/x
  3. Step 3: Cross multiply
    624,172.32x = 862,239.60 × 496,684.80
  4. Step 4: Simplify right side
    624,172.32x = 428,261,303,278.08
  5. Step 5: Solve for x
    x = 428,261,303,278.08/624,172.32
  6. Step 6: Final answer
    x = 686,126.71

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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.