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Finding the Fourth Proportional to 70,403.54, 105,904.98 and 63,819.44

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Solution

The fourth proportional to 70,403.54, 105,904.98 and 63,819.44 is: 96,000.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,403.54 : 105,904.98 = 63,819.44 : x
  2. Step 2: Convert to fraction form
    70,403.54/105,904.98 = 63,819.44/x
  3. Step 3: Cross multiply
    70,403.54x = 105,904.98 × 63,819.44
  4. Step 4: Simplify right side
    70,403.54x = 6,758,796,516.81
  5. Step 5: Solve for x
    x = 6,758,796,516.81/70,403.54
  6. Step 6: Final answer
    x = 96,000.81

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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.