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Finding the Fourth Proportional to 1,867,655.80, 2,801,483.70 and 1,647,206.20

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Solution

The fourth proportional to 1,867,655.80, 2,801,483.70 and 1,647,206.20 is: 2,470,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867,655.80 : 2,801,483.70 = 1,647,206.20 : x
  2. Step 2: Convert to fraction form
    1,867,655.80/2,801,483.70 = 1,647,206.20/x
  3. Step 3: Cross multiply
    1,867,655.80x = 2,801,483.70 × 1,647,206.20
  4. Step 4: Simplify right side
    1,867,655.80x = 4,614,621,319,838.94
  5. Step 5: Solve for x
    x = 4,614,621,319,838.94/1,867,655.80
  6. Step 6: Final answer
    x = 2,470,809.30

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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.