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Finding the Fourth Proportional to 93,586.52, 128,930.46 and 65,241.56

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Solution

The fourth proportional to 93,586.52, 128,930.46 and 65,241.56 is: 89,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,586.52 : 128,930.46 = 65,241.56 : x
  2. Step 2: Convert to fraction form
    93,586.52/128,930.46 = 65,241.56/x
  3. Step 3: Cross multiply
    93,586.52x = 128,930.46 × 65,241.56
  4. Step 4: Simplify right side
    93,586.52x = 8,411,624,341.92
  5. Step 5: Solve for x
    x = 8,411,624,341.92/93,586.52
  6. Step 6: Final answer
    x = 89,880.73

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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.