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Finding the Fourth Proportional to 624,697.20, 936,768.78 and 287,656.20

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Solution

The fourth proportional to 624,697.20, 936,768.78 and 287,656.20 is: 431,356.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,697.20 : 936,768.78 = 287,656.20 : x
  2. Step 2: Convert to fraction form
    624,697.20/936,768.78 = 287,656.20/x
  3. Step 3: Cross multiply
    624,697.20x = 936,768.78 × 287,656.20
  4. Step 4: Simplify right side
    624,697.20x = 269,467,347,533.44
  5. Step 5: Solve for x
    x = 269,467,347,533.44/624,697.20
  6. Step 6: Final answer
    x = 431,356.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.