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Finding the Fourth Proportional to 1,762,826.40, 2,644,239.60 and 1,591,408.80

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Solution

The fourth proportional to 1,762,826.40, 2,644,239.60 and 1,591,408.80 is: 2,387,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762,826.40 : 2,644,239.60 = 1,591,408.80 : x
  2. Step 2: Convert to fraction form
    1,762,826.40/2,644,239.60 = 1,591,408.80/x
  3. Step 3: Cross multiply
    1,762,826.40x = 2,644,239.60 × 1,591,408.80
  4. Step 4: Simplify right side
    1,762,826.40x = 4,208,066,168,748.48
  5. Step 5: Solve for x
    x = 4,208,066,168,748.48/1,762,826.40
  6. Step 6: Final answer
    x = 2,387,113.20

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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.