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Finding the Fourth Proportional to 93,970.64, 140,911.32 and 54,539.84

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Solution

The fourth proportional to 93,970.64, 140,911.32 and 54,539.84 is: 81,783.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,970.64 : 140,911.32 = 54,539.84 : x
  2. Step 2: Convert to fraction form
    93,970.64/140,911.32 = 54,539.84/x
  3. Step 3: Cross multiply
    93,970.64x = 140,911.32 × 54,539.84
  4. Step 4: Simplify right side
    93,970.64x = 7,685,280,846.99
  5. Step 5: Solve for x
    x = 7,685,280,846.99/93,970.64
  6. Step 6: Final answer
    x = 81,783.85

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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.