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Finding the Fourth Proportional to 93,256, 139,782.24 and 45,903.68

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Solution

The fourth proportional to 93,256, 139,782.24 and 45,903.68 is: 68,805.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,256 : 139,782.24 = 45,903.68 : x
  2. Step 2: Convert to fraction form
    93,256/139,782.24 = 45,903.68/x
  3. Step 3: Cross multiply
    93,256x = 139,782.24 × 45,903.68
  4. Step 4: Simplify right side
    93,256x = 6,416,519,214.64
  5. Step 5: Solve for x
    x = 6,416,519,214.64/93,256
  6. Step 6: Final answer
    x = 68,805.43

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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.