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Finding the Fourth Proportional to 77,136.30, 115,718.88 and 35,019.32

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Solution

The fourth proportional to 77,136.30, 115,718.88 and 35,019.32 is: 52,535.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,136.30 : 115,718.88 = 35,019.32 : x
  2. Step 2: Convert to fraction form
    77,136.30/115,718.88 = 35,019.32/x
  3. Step 3: Cross multiply
    77,136.30x = 115,718.88 × 35,019.32
  4. Step 4: Simplify right side
    77,136.30x = 4,052,396,488.76
  5. Step 5: Solve for x
    x = 4,052,396,488.76/77,136.30
  6. Step 6: Final answer
    x = 52,535.53

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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.