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Finding the Fourth Proportional to 78,313.84, 108,078.44 and 44,322.36

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Solution

The fourth proportional to 78,313.84, 108,078.44 and 44,322.36 is: 61,167.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313.84 : 108,078.44 = 44,322.36 : x
  2. Step 2: Convert to fraction form
    78,313.84/108,078.44 = 44,322.36/x
  3. Step 3: Cross multiply
    78,313.84x = 108,078.44 × 44,322.36
  4. Step 4: Simplify right side
    78,313.84x = 4,790,291,525.92
  5. Step 5: Solve for x
    x = 4,790,291,525.92/78,313.84
  6. Step 6: Final answer
    x = 61,167.88

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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.