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Finding the Fourth Proportional to 93,339.40, 139,983.30 and 25,855.30

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Solution

The fourth proportional to 93,339.40, 139,983.30 and 25,855.30 is: 38,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,339.40 : 139,983.30 = 25,855.30 : x
  2. Step 2: Convert to fraction form
    93,339.40/139,983.30 = 25,855.30/x
  3. Step 3: Cross multiply
    93,339.40x = 139,983.30 × 25,855.30
  4. Step 4: Simplify right side
    93,339.40x = 3,619,310,216.49
  5. Step 5: Solve for x
    x = 3,619,310,216.49/93,339.40
  6. Step 6: Final answer
    x = 38,775.80

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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.