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Finding the Fourth Proportional to 70,588.40, 105,881.23 and 28,467.54

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Solution

The fourth proportional to 70,588.40, 105,881.23 and 28,467.54 is: 42,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,588.40 : 105,881.23 = 28,467.54 : x
  2. Step 2: Convert to fraction form
    70,588.40/105,881.23 = 28,467.54/x
  3. Step 3: Cross multiply
    70,588.40x = 105,881.23 × 28,467.54
  4. Step 4: Simplify right side
    70,588.40x = 3,014,178,150.27
  5. Step 5: Solve for x
    x = 3,014,178,150.27/70,588.40
  6. Step 6: Final answer
    x = 42,700.76

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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.