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Finding the Fourth Proportional to 48,665.64, 72,994.80 and 13,608.02

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Solution

The fourth proportional to 48,665.64, 72,994.80 and 13,608.02 is: 20,411.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,665.64 : 72,994.80 = 13,608.02 : x
  2. Step 2: Convert to fraction form
    48,665.64/72,994.80 = 13,608.02/x
  3. Step 3: Cross multiply
    48,665.64x = 72,994.80 × 13,608.02
  4. Step 4: Simplify right side
    48,665.64x = 993,314,698.30
  5. Step 5: Solve for x
    x = 993,314,698.30/48,665.64
  6. Step 6: Final answer
    x = 20,411.01

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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.