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Finding the Fourth Proportional to 286,806.87, 395,632.08 and 172,054.98

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Solution

The fourth proportional to 286,806.87, 395,632.08 and 172,054.98 is: 237,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,806.87 : 395,632.08 = 172,054.98 : x
  2. Step 2: Convert to fraction form
    286,806.87/395,632.08 = 172,054.98/x
  3. Step 3: Cross multiply
    286,806.87x = 395,632.08 × 172,054.98
  4. Step 4: Simplify right side
    286,806.87x = 68,070,469,611.76
  5. Step 5: Solve for x
    x = 68,070,469,611.76/286,806.87
  6. Step 6: Final answer
    x = 237,339.05

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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.