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Finding the Fourth Proportional to 6,649,813.80, 9,974,720.70 and 2,390,412.60

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Solution

The fourth proportional to 6,649,813.80, 9,974,720.70 and 2,390,412.60 is: 3,585,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649,813.80 : 9,974,720.70 = 2,390,412.60 : x
  2. Step 2: Convert to fraction form
    6,649,813.80/9,974,720.70 = 2,390,412.60/x
  3. Step 3: Cross multiply
    6,649,813.80x = 9,974,720.70 × 2,390,412.60
  4. Step 4: Simplify right side
    6,649,813.80x = 23,843,698,042,760.82
  5. Step 5: Solve for x
    x = 23,843,698,042,760.82/6,649,813.80
  6. Step 6: Final answer
    x = 3,585,618.90

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Similar ratio
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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.