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Finding the Fourth Proportional to 48,611.20, 72,916.80 and 46,537.60

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Solution

The fourth proportional to 48,611.20, 72,916.80 and 46,537.60 is: 69,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,611.20 : 72,916.80 = 46,537.60 : x
  2. Step 2: Convert to fraction form
    48,611.20/72,916.80 = 46,537.60/x
  3. Step 3: Cross multiply
    48,611.20x = 72,916.80 × 46,537.60
  4. Step 4: Simplify right side
    48,611.20x = 3,393,372,871.68
  5. Step 5: Solve for x
    x = 3,393,372,871.68/48,611.20
  6. Step 6: Final answer
    x = 69,806.40

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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.