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Finding the Fourth Proportional to 70,873.70, 97,811.22 and 39,048.32

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Solution

The fourth proportional to 70,873.70, 97,811.22 and 39,048.32 is: 53,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,873.70 : 97,811.22 = 39,048.32 : x
  2. Step 2: Convert to fraction form
    70,873.70/97,811.22 = 39,048.32/x
  3. Step 3: Cross multiply
    70,873.70x = 97,811.22 × 39,048.32
  4. Step 4: Simplify right side
    70,873.70x = 3,819,363,818.15
  5. Step 5: Solve for x
    x = 3,819,363,818.15/70,873.70
  6. Step 6: Final answer
    x = 53,889.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.