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Finding the Fourth Proportional to 5,220,806.65, 7,831,209.98 and 4,866,512.65

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Solution

The fourth proportional to 5,220,806.65, 7,831,209.98 and 4,866,512.65 is: 7,299,768.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220,806.65 : 7,831,209.98 = 4,866,512.65 : x
  2. Step 2: Convert to fraction form
    5,220,806.65/7,831,209.98 = 4,866,512.65/x
  3. Step 3: Cross multiply
    5,220,806.65x = 7,831,209.98 × 4,866,512.65
  4. Step 4: Simplify right side
    5,220,806.65x = 38,110,682,408,143.69
  5. Step 5: Solve for x
    x = 38,110,682,408,143.69/5,220,806.65
  6. Step 6: Final answer
    x = 7,299,768.98

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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.