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Finding the Fourth Proportional to 79,965, 110,361.44 and 46,431

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Solution

The fourth proportional to 79,965, 110,361.44 and 46,431 is: 64,080.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,965 : 110,361.44 = 46,431 : x
  2. Step 2: Convert to fraction form
    79,965/110,361.44 = 46,431/x
  3. Step 3: Cross multiply
    79,965x = 110,361.44 × 46,431
  4. Step 4: Simplify right side
    79,965x = 5,124,192,020.64
  5. Step 5: Solve for x
    x = 5,124,192,020.64/79,965
  6. Step 6: Final answer
    x = 64,080.44

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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.