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Finding the Fourth Proportional to 9,993,843.20, 14,990,764.80 and 4,310,105.60

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Solution

The fourth proportional to 9,993,843.20, 14,990,764.80 and 4,310,105.60 is: 6,465,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993,843.20 : 14,990,764.80 = 4,310,105.60 : x
  2. Step 2: Convert to fraction form
    9,993,843.20/14,990,764.80 = 4,310,105.60/x
  3. Step 3: Cross multiply
    9,993,843.20x = 14,990,764.80 × 4,310,105.60
  4. Step 4: Simplify right side
    9,993,843.20x = 64,611,779,312,762.88
  5. Step 5: Solve for x
    x = 64,611,779,312,762.88/9,993,843.20
  6. Step 6: Final answer
    x = 6,465,158.40

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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.