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Finding the Fourth Proportional to 1,138,179,846.03, 1,570,207,226.67 and 761,957,646.61

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Solution

The fourth proportional to 1,138,179,846.03, 1,570,207,226.67 and 761,957,646.61 is: 1,051,179,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,179,846.03 : 1,570,207,226.67 = 761,957,646.61 : x
  2. Step 2: Convert to fraction form
    1,138,179,846.03/1,570,207,226.67 = 761,957,646.61/x
  3. Step 3: Cross multiply
    1,138,179,846.03x = 1,570,207,226.67 × 761,957,646.61
  4. Step 4: Simplify right side
    1,138,179,846.03x = 1,196,431,403,123,488,000
  5. Step 5: Solve for x
    x = 1,196,431,403,123,488,000/1,138,179,846.03
  6. Step 6: Final answer
    x = 1,051,179,571.75

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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.