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Finding the Fourth Proportional to 86,855.57, 119,696.88 and 69,608.35

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Solution

The fourth proportional to 86,855.57, 119,696.88 and 69,608.35 is: 95,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,855.57 : 119,696.88 = 69,608.35 : x
  2. Step 2: Convert to fraction form
    86,855.57/119,696.88 = 69,608.35/x
  3. Step 3: Cross multiply
    86,855.57x = 119,696.88 × 69,608.35
  4. Step 4: Simplify right side
    86,855.57x = 8,331,902,017.71
  5. Step 5: Solve for x
    x = 8,331,902,017.71/86,855.57
  6. Step 6: Final answer
    x = 95,928.24

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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.