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Finding the Fourth Proportional to 56,664,477.60, 84,996,716.40 and 18,329,866.80

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Solution

The fourth proportional to 56,664,477.60, 84,996,716.40 and 18,329,866.80 is: 27,494,800.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,664,477.60 : 84,996,716.40 = 18,329,866.80 : x
  2. Step 2: Convert to fraction form
    56,664,477.60/84,996,716.40 = 18,329,866.80/x
  3. Step 3: Cross multiply
    56,664,477.60x = 84,996,716.40 × 18,329,866.80
  4. Step 4: Simplify right side
    56,664,477.60x = 1,557,978,490,049,375.75
  5. Step 5: Solve for x
    x = 1,557,978,490,049,375.75/56,664,477.60
  6. Step 6: Final answer
    x = 27,494,800.20

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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.