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Finding the Fourth Proportional to 70,879.44, 106,294.20 and 20,946.24

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Solution

The fourth proportional to 70,879.44, 106,294.20 and 20,946.24 is: 31,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,879.44 : 106,294.20 = 20,946.24 : x
  2. Step 2: Convert to fraction form
    70,879.44/106,294.20 = 20,946.24/x
  3. Step 3: Cross multiply
    70,879.44x = 106,294.20 × 20,946.24
  4. Step 4: Simplify right side
    70,879.44x = 2,226,463,823.81
  5. Step 5: Solve for x
    x = 2,226,463,823.81/70,879.44
  6. Step 6: Final answer
    x = 31,411.98

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1.5x scale

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.