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Finding the Fourth Proportional to 70,118.87, 105,228.72 and 47,573.43

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Solution

The fourth proportional to 70,118.87, 105,228.72 and 47,573.43 is: 71,394.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,118.87 : 105,228.72 = 47,573.43 : x
  2. Step 2: Convert to fraction form
    70,118.87/105,228.72 = 47,573.43/x
  3. Step 3: Cross multiply
    70,118.87x = 105,228.72 × 47,573.43
  4. Step 4: Simplify right side
    70,118.87x = 5,006,090,750.30
  5. Step 5: Solve for x
    x = 5,006,090,750.30/70,118.87
  6. Step 6: Final answer
    x = 71,394.35

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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.