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Finding the Fourth Proportional to 68,590.63, 103,400.05 and 64,018.44

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Solution

The fourth proportional to 68,590.63, 103,400.05 and 64,018.44 is: 96,507.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,590.63 : 103,400.05 = 64,018.44 : x
  2. Step 2: Convert to fraction form
    68,590.63/103,400.05 = 64,018.44/x
  3. Step 3: Cross multiply
    68,590.63x = 103,400.05 × 64,018.44
  4. Step 4: Simplify right side
    68,590.63x = 6,619,509,059.83
  5. Step 5: Solve for x
    x = 6,619,509,059.83/68,590.63
  6. Step 6: Final answer
    x = 96,507.48

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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.