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Finding the Fourth Proportional to 18,697,669.55, 25,615,687.81 and 17,998,464.59

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Solution

The fourth proportional to 18,697,669.55, 25,615,687.81 and 17,998,464.59 is: 24,657,781.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697,669.55 : 25,615,687.81 = 17,998,464.59 : x
  2. Step 2: Convert to fraction form
    18,697,669.55/25,615,687.81 = 17,998,464.59/x
  3. Step 3: Cross multiply
    18,697,669.55x = 25,615,687.81 × 17,998,464.59
  4. Step 4: Simplify right side
    18,697,669.55x = 461,043,049,996,779.62
  5. Step 5: Solve for x
    x = 461,043,049,996,779.62/18,697,669.55
  6. Step 6: Final answer
    x = 24,657,781.48

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.