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Finding the Fourth Proportional to 8,671,424.40, 12,993,139.80 and 5,470,822.80

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Solution

The fourth proportional to 8,671,424.40, 12,993,139.80 and 5,470,822.80 is: 8,197,403.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671,424.40 : 12,993,139.80 = 5,470,822.80 : x
  2. Step 2: Convert to fraction form
    8,671,424.40/12,993,139.80 = 5,470,822.80/x
  3. Step 3: Cross multiply
    8,671,424.40x = 12,993,139.80 × 5,470,822.80
  4. Step 4: Simplify right side
    8,671,424.40x = 71,083,165,461,427.44
  5. Step 5: Solve for x
    x = 71,083,165,461,427.44/8,671,424.40
  6. Step 6: Final answer
    x = 8,197,403.58

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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.