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Finding the Fourth Proportional to 70,591.76, 105,900.63 and 23,209.53

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Solution

The fourth proportional to 70,591.76, 105,900.63 and 23,209.53 is: 34,818.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,591.76 : 105,900.63 = 23,209.53 : x
  2. Step 2: Convert to fraction form
    70,591.76/105,900.63 = 23,209.53/x
  3. Step 3: Cross multiply
    70,591.76x = 105,900.63 × 23,209.53
  4. Step 4: Simplify right side
    70,591.76x = 2,457,903,849.00
  5. Step 5: Solve for x
    x = 2,457,903,849.00/70,591.76
  6. Step 6: Final answer
    x = 34,818.57

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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.