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Finding the Fourth Proportional to 93,381.75, 128,866.82 and 50,940.45

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Solution

The fourth proportional to 93,381.75, 128,866.82 and 50,940.45 is: 70,297.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,381.75 : 128,866.82 = 50,940.45 : x
  2. Step 2: Convert to fraction form
    93,381.75/128,866.82 = 50,940.45/x
  3. Step 3: Cross multiply
    93,381.75x = 128,866.82 × 50,940.45
  4. Step 4: Simplify right side
    93,381.75x = 6,564,533,546.17
  5. Step 5: Solve for x
    x = 6,564,533,546.17/93,381.75
  6. Step 6: Final answer
    x = 70,297.82

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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.