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Finding the Fourth Proportional to 103,958.68, 143,465.34 and 61,524.76

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Solution

The fourth proportional to 103,958.68, 143,465.34 and 61,524.76 is: 84,905.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,958.68 : 143,465.34 = 61,524.76 : x
  2. Step 2: Convert to fraction form
    103,958.68/143,465.34 = 61,524.76/x
  3. Step 3: Cross multiply
    103,958.68x = 143,465.34 × 61,524.76
  4. Step 4: Simplify right side
    103,958.68x = 8,826,670,611.82
  5. Step 5: Solve for x
    x = 8,826,670,611.82/103,958.68
  6. Step 6: Final answer
    x = 84,905.57

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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.