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Finding the Fourth Proportional to 48,646.64, 72,942.42 and 28,937.72

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Solution

The fourth proportional to 48,646.64, 72,942.42 and 28,937.72 is: 43,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,646.64 : 72,942.42 = 28,937.72 : x
  2. Step 2: Convert to fraction form
    48,646.64/72,942.42 = 28,937.72/x
  3. Step 3: Cross multiply
    48,646.64x = 72,942.42 × 28,937.72
  4. Step 4: Simplify right side
    48,646.64x = 2,110,787,326.08
  5. Step 5: Solve for x
    x = 2,110,787,326.08/48,646.64
  6. Step 6: Final answer
    x = 43,390.20

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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.