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Finding the Fourth Proportional to 32,145.80, 48,153.90 and 18,278.60

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Solution

The fourth proportional to 32,145.80, 48,153.90 and 18,278.60 is: 27,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,145.80 : 48,153.90 = 18,278.60 : x
  2. Step 2: Convert to fraction form
    32,145.80/48,153.90 = 18,278.60/x
  3. Step 3: Cross multiply
    32,145.80x = 48,153.90 × 18,278.60
  4. Step 4: Simplify right side
    32,145.80x = 880,185,876.54
  5. Step 5: Solve for x
    x = 880,185,876.54/32,145.80
  6. Step 6: Final answer
    x = 27,381.05

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1.5x scale

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.