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Finding the Fourth Proportional to 70,930.74, 97,876.68 and 39,093.50

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Solution

The fourth proportional to 70,930.74, 97,876.68 and 39,093.50 is: 53,944.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.74 : 97,876.68 = 39,093.50 : x
  2. Step 2: Convert to fraction form
    70,930.74/97,876.68 = 39,093.50/x
  3. Step 3: Cross multiply
    70,930.74x = 97,876.68 × 39,093.50
  4. Step 4: Simplify right side
    70,930.74x = 3,826,341,989.58
  5. Step 5: Solve for x
    x = 3,826,341,989.58/70,930.74
  6. Step 6: Final answer
    x = 53,944.76

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1.5x scale

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.