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Finding the Fourth Proportional to 61,166.35, 91,758.66 and 21,720.16

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Solution

The fourth proportional to 61,166.35, 91,758.66 and 21,720.16 is: 32,583.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,166.35 : 91,758.66 = 21,720.16 : x
  2. Step 2: Convert to fraction form
    61,166.35/91,758.66 = 21,720.16/x
  3. Step 3: Cross multiply
    61,166.35x = 91,758.66 × 21,720.16
  4. Step 4: Simplify right side
    61,166.35x = 1,993,012,776.59
  5. Step 5: Solve for x
    x = 1,993,012,776.59/61,166.35
  6. Step 6: Final answer
    x = 32,583.48

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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.