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Finding the Fourth Proportional to 28,706.68, 39,618.48 and 18,095.68

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Solution

The fourth proportional to 28,706.68, 39,618.48 and 18,095.68 is: 24,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,706.68 : 39,618.48 = 18,095.68 : x
  2. Step 2: Convert to fraction form
    28,706.68/39,618.48 = 18,095.68/x
  3. Step 3: Cross multiply
    28,706.68x = 39,618.48 × 18,095.68
  4. Step 4: Simplify right side
    28,706.68x = 716,923,336.17
  5. Step 5: Solve for x
    x = 716,923,336.17/28,706.68
  6. Step 6: Final answer
    x = 24,974.09

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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.