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Finding the Fourth Proportional to 49,336.80, 74,005.20 and 28,600.80

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Solution

The fourth proportional to 49,336.80, 74,005.20 and 28,600.80 is: 42,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,336.80 : 74,005.20 = 28,600.80 : x
  2. Step 2: Convert to fraction form
    49,336.80/74,005.20 = 28,600.80/x
  3. Step 3: Cross multiply
    49,336.80x = 74,005.20 × 28,600.80
  4. Step 4: Simplify right side
    49,336.80x = 2,116,607,924.16
  5. Step 5: Solve for x
    x = 2,116,607,924.16/49,336.80
  6. Step 6: Final answer
    x = 42,901.20

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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.