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Finding the Fourth Proportional to 70,647.27, 105,970.63 and 18,056.67

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Solution

The fourth proportional to 70,647.27, 105,970.63 and 18,056.67 is: 27,084.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,647.27 : 105,970.63 = 18,056.67 : x
  2. Step 2: Convert to fraction form
    70,647.27/105,970.63 = 18,056.67/x
  3. Step 3: Cross multiply
    70,647.27x = 105,970.63 × 18,056.67
  4. Step 4: Simplify right side
    70,647.27x = 1,913,476,695.60
  5. Step 5: Solve for x
    x = 1,913,476,695.60/70,647.27
  6. Step 6: Final answer
    x = 27,084.93

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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.