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Finding the Fourth Proportional to 93,119.63, 128,505.11 and 50,678.46

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Solution

The fourth proportional to 93,119.63, 128,505.11 and 50,678.46 is: 69,936.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,119.63 : 128,505.11 = 50,678.46 : x
  2. Step 2: Convert to fraction form
    93,119.63/128,505.11 = 50,678.46/x
  3. Step 3: Cross multiply
    93,119.63x = 128,505.11 × 50,678.46
  4. Step 4: Simplify right side
    93,119.63x = 6,512,440,823.54
  5. Step 5: Solve for x
    x = 6,512,440,823.54/93,119.63
  6. Step 6: Final answer
    x = 69,936.29

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1.5x scale

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.