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Finding the Fourth Proportional to 5,338,406.92, 8,008,975.88 and 1,551,889.80

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Solution

The fourth proportional to 5,338,406.92, 8,008,975.88 and 1,551,889.80 is: 2,328,231.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,338,406.92 : 8,008,975.88 = 1,551,889.80 : x
  2. Step 2: Convert to fraction form
    5,338,406.92/8,008,975.88 = 1,551,889.80/x
  3. Step 3: Cross multiply
    5,338,406.92x = 8,008,975.88 × 1,551,889.80
  4. Step 4: Simplify right side
    5,338,406.92x = 12,429,047,976,618.02
  5. Step 5: Solve for x
    x = 12,429,047,976,618.02/5,338,406.92
  6. Step 6: Final answer
    x = 2,328,231.65

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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.