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Finding the Fourth Proportional to 48,722.40, 72,968.40 and 33,055.20

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Solution

The fourth proportional to 48,722.40, 72,968.40 and 33,055.20 is: 49,504.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,722.40 : 72,968.40 = 33,055.20 : x
  2. Step 2: Convert to fraction form
    48,722.40/72,968.40 = 33,055.20/x
  3. Step 3: Cross multiply
    48,722.40x = 72,968.40 × 33,055.20
  4. Step 4: Simplify right side
    48,722.40x = 2,411,985,055.68
  5. Step 5: Solve for x
    x = 2,411,985,055.68/48,722.40
  6. Step 6: Final answer
    x = 49,504.64

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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.