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Finding the Fourth Proportional to 68,591.63, 103,401.55 and 64,019.44

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Solution

The fourth proportional to 68,591.63, 103,401.55 and 64,019.44 is: 96,509.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,591.63 : 103,401.55 = 64,019.44 : x
  2. Step 2: Convert to fraction form
    68,591.63/103,401.55 = 64,019.44/x
  3. Step 3: Cross multiply
    68,591.63x = 103,401.55 × 64,019.44
  4. Step 4: Simplify right side
    68,591.63x = 6,619,709,326.13
  5. Step 5: Solve for x
    x = 6,619,709,326.13/68,591.63
  6. Step 6: Final answer
    x = 96,509.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.