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Finding the Fourth Proportional to 105,990.70, 146,235.27 and 63,533.74

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Solution

The fourth proportional to 105,990.70, 146,235.27 and 63,533.74 is: 87,657.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,990.70 : 146,235.27 = 63,533.74 : x
  2. Step 2: Convert to fraction form
    105,990.70/146,235.27 = 63,533.74/x
  3. Step 3: Cross multiply
    105,990.70x = 146,235.27 × 63,533.74
  4. Step 4: Simplify right side
    105,990.70x = 9,290,873,623.01
  5. Step 5: Solve for x
    x = 9,290,873,623.01/105,990.70
  6. Step 6: Final answer
    x = 87,657.44

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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.