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Finding the Fourth Proportional to 93,143.57, 128,384.37 and 65,884.46

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Solution

The fourth proportional to 93,143.57, 128,384.37 and 65,884.46 is: 90,811.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,143.57 : 128,384.37 = 65,884.46 : x
  2. Step 2: Convert to fraction form
    93,143.57/128,384.37 = 65,884.46/x
  3. Step 3: Cross multiply
    93,143.57x = 128,384.37 × 65,884.46
  4. Step 4: Simplify right side
    93,143.57x = 8,458,534,247.97
  5. Step 5: Solve for x
    x = 8,458,534,247.97/93,143.57
  6. Step 6: Final answer
    x = 90,811.79

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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.