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Finding the Fourth Proportional to 61,718.81, 85,170.20 and 36,568.31

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Solution

The fourth proportional to 61,718.81, 85,170.20 and 36,568.31 is: 50,463.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,718.81 : 85,170.20 = 36,568.31 : x
  2. Step 2: Convert to fraction form
    61,718.81/85,170.20 = 36,568.31/x
  3. Step 3: Cross multiply
    61,718.81x = 85,170.20 × 36,568.31
  4. Step 4: Simplify right side
    61,718.81x = 3,114,529,667.67
  5. Step 5: Solve for x
    x = 3,114,529,667.67/61,718.81
  6. Step 6: Final answer
    x = 50,463.22

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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.