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Finding the Fourth Proportional to 70,907.64, 105,524.52 and 68,545.32

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Solution

The fourth proportional to 70,907.64, 105,524.52 and 68,545.32 is: 102,008.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.64 : 105,524.52 = 68,545.32 : x
  2. Step 2: Convert to fraction form
    70,907.64/105,524.52 = 68,545.32/x
  3. Step 3: Cross multiply
    70,907.64x = 105,524.52 × 68,545.32
  4. Step 4: Simplify right side
    70,907.64x = 7,233,211,991.25
  5. Step 5: Solve for x
    x = 7,233,211,991.25/70,907.64
  6. Step 6: Final answer
    x = 102,008.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.