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Finding the Fourth Proportional to 48,379.68, 72,506.75 and 21,705.98

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Solution

The fourth proportional to 48,379.68, 72,506.75 and 21,705.98 is: 32,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,379.68 : 72,506.75 = 21,705.98 : x
  2. Step 2: Convert to fraction form
    48,379.68/72,506.75 = 21,705.98/x
  3. Step 3: Cross multiply
    48,379.68x = 72,506.75 × 21,705.98
  4. Step 4: Simplify right side
    48,379.68x = 1,573,829,594.30
  5. Step 5: Solve for x
    x = 1,573,829,594.30/48,379.68
  6. Step 6: Final answer
    x = 32,530.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.