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Finding the Fourth Proportional to 93,189.72, 139,788.90 and 26,639.31

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Solution

The fourth proportional to 93,189.72, 139,788.90 and 26,639.31 is: 39,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,189.72 : 139,788.90 = 26,639.31 : x
  2. Step 2: Convert to fraction form
    93,189.72/139,788.90 = 26,639.31/x
  3. Step 3: Cross multiply
    93,189.72x = 139,788.90 × 26,639.31
  4. Step 4: Simplify right side
    93,189.72x = 3,723,879,841.66
  5. Step 5: Solve for x
    x = 3,723,879,841.66/93,189.72
  6. Step 6: Final answer
    x = 39,960.20

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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.