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Finding the Fourth Proportional to 70,441.58, 105,715.38 and 54,607.88

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Solution

The fourth proportional to 70,441.58, 105,715.38 and 54,607.88 is: 81,952.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,441.58 : 105,715.38 = 54,607.88 : x
  2. Step 2: Convert to fraction form
    70,441.58/105,715.38 = 54,607.88/x
  3. Step 3: Cross multiply
    70,441.58x = 105,715.38 × 54,607.88
  4. Step 4: Simplify right side
    70,441.58x = 5,772,892,785.19
  5. Step 5: Solve for x
    x = 5,772,892,785.19/70,441.58
  6. Step 6: Final answer
    x = 81,952.91

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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.