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Finding the Fourth Proportional to 104,085.81, 143,640.34 and 61,096.07

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Solution

The fourth proportional to 104,085.81, 143,640.34 and 61,096.07 is: 84,313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,085.81 : 143,640.34 = 61,096.07 : x
  2. Step 2: Convert to fraction form
    104,085.81/143,640.34 = 61,096.07/x
  3. Step 3: Cross multiply
    104,085.81x = 143,640.34 × 61,096.07
  4. Step 4: Simplify right side
    104,085.81x = 8,775,860,473.82
  5. Step 5: Solve for x
    x = 8,775,860,473.82/104,085.81
  6. Step 6: Final answer
    x = 84,313.71

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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.