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Finding the Fourth Proportional to 93,138.26, 139,721.36 and 43,223.47

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Solution

The fourth proportional to 93,138.26, 139,721.36 and 43,223.47 is: 64,841.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,138.26 : 139,721.36 = 43,223.47 : x
  2. Step 2: Convert to fraction form
    93,138.26/139,721.36 = 43,223.47/x
  3. Step 3: Cross multiply
    93,138.26x = 139,721.36 × 43,223.47
  4. Step 4: Simplify right side
    93,138.26x = 6,039,242,232.83
  5. Step 5: Solve for x
    x = 6,039,242,232.83/93,138.26
  6. Step 6: Final answer
    x = 64,841.69

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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.