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Finding the Fourth Proportional to 93,040.84, 128,441.46 and 87,072.76

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Solution

The fourth proportional to 93,040.84, 128,441.46 and 87,072.76 is: 120,202.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,040.84 : 128,441.46 = 87,072.76 : x
  2. Step 2: Convert to fraction form
    93,040.84/128,441.46 = 87,072.76/x
  3. Step 3: Cross multiply
    93,040.84x = 128,441.46 × 87,072.76
  4. Step 4: Simplify right side
    93,040.84x = 11,183,752,420.63
  5. Step 5: Solve for x
    x = 11,183,752,420.63/93,040.84
  6. Step 6: Final answer
    x = 120,202.62

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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.