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Finding the Fourth Proportional to 93,390.49, 128,876.32 and 50,949.01

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Solution

The fourth proportional to 93,390.49, 128,876.32 and 50,949.01 is: 70,308.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,390.49 : 128,876.32 = 50,949.01 : x
  2. Step 2: Convert to fraction form
    93,390.49/128,876.32 = 50,949.01/x
  3. Step 3: Cross multiply
    93,390.49x = 128,876.32 × 50,949.01
  4. Step 4: Simplify right side
    93,390.49x = 6,566,120,916.44
  5. Step 5: Solve for x
    x = 6,566,120,916.44/93,390.49
  6. Step 6: Final answer
    x = 70,308.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.