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Finding the Fourth Proportional to 111,644,319.36, 154,070,978.76 and 61,410,523.44

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Solution

The fourth proportional to 111,644,319.36, 154,070,978.76 and 61,410,523.44 is: 84,747,522.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,644,319.36 : 154,070,978.76 = 61,410,523.44 : x
  2. Step 2: Convert to fraction form
    111,644,319.36/154,070,978.76 = 61,410,523.44/x
  3. Step 3: Cross multiply
    111,644,319.36x = 154,070,978.76 × 61,410,523.44
  4. Step 4: Simplify right side
    111,644,319.36x = 9,461,579,452,564,722
  5. Step 5: Solve for x
    x = 9,461,579,452,564,722/111,644,319.36
  6. Step 6: Final answer
    x = 84,747,522.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.