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Finding the Fourth Proportional to 76,322.95, 113,928.50 and 70,694.81

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Solution

The fourth proportional to 76,322.95, 113,928.50 and 70,694.81 is: 105,527.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,322.95 : 113,928.50 = 70,694.81 : x
  2. Step 2: Convert to fraction form
    76,322.95/113,928.50 = 70,694.81/x
  3. Step 3: Cross multiply
    76,322.95x = 113,928.50 × 70,694.81
  4. Step 4: Simplify right side
    76,322.95x = 8,054,153,661.09
  5. Step 5: Solve for x
    x = 8,054,153,661.09/76,322.95
  6. Step 6: Final answer
    x = 105,527.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.