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Finding the Fourth Proportional to 8,393,731.20, 12,590,596.80 and 3,348,662.40

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Solution

The fourth proportional to 8,393,731.20, 12,590,596.80 and 3,348,662.40 is: 5,022,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393,731.20 : 12,590,596.80 = 3,348,662.40 : x
  2. Step 2: Convert to fraction form
    8,393,731.20/12,590,596.80 = 3,348,662.40/x
  3. Step 3: Cross multiply
    8,393,731.20x = 12,590,596.80 × 3,348,662.40
  4. Step 4: Simplify right side
    8,393,731.20x = 42,161,658,097,720.32
  5. Step 5: Solve for x
    x = 42,161,658,097,720.32/8,393,731.20
  6. Step 6: Final answer
    x = 5,022,993.60

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Similar ratio
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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.