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Finding the Fourth Proportional to 85,080.78, 117,411.73 and 46,839.06

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Solution

The fourth proportional to 85,080.78, 117,411.73 and 46,839.06 is: 64,638.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,080.78 : 117,411.73 = 46,839.06 : x
  2. Step 2: Convert to fraction form
    85,080.78/117,411.73 = 46,839.06/x
  3. Step 3: Cross multiply
    85,080.78x = 117,411.73 × 46,839.06
  4. Step 4: Simplify right side
    85,080.78x = 5,499,454,949.08
  5. Step 5: Solve for x
    x = 5,499,454,949.08/85,080.78
  6. Step 6: Final answer
    x = 64,638.04

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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.