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Finding the Fourth Proportional to 61,140.70, 91,711.05 and 34,896.70

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Solution

The fourth proportional to 61,140.70, 91,711.05 and 34,896.70 is: 52,345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,140.70 : 91,711.05 = 34,896.70 : x
  2. Step 2: Convert to fraction form
    61,140.70/91,711.05 = 34,896.70/x
  3. Step 3: Cross multiply
    61,140.70x = 91,711.05 × 34,896.70
  4. Step 4: Simplify right side
    61,140.70x = 3,200,412,998.54
  5. Step 5: Solve for x
    x = 3,200,412,998.54/61,140.70
  6. Step 6: Final answer
    x = 52,345.05

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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.