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Finding the Fourth Proportional to 28,176.57, 38,880.95 and 16,843.82

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Solution

The fourth proportional to 28,176.57, 38,880.95 and 16,843.82 is: 23,242.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.57 : 38,880.95 = 16,843.82 : x
  2. Step 2: Convert to fraction form
    28,176.57/38,880.95 = 16,843.82/x
  3. Step 3: Cross multiply
    28,176.57x = 38,880.95 × 16,843.82
  4. Step 4: Simplify right side
    28,176.57x = 654,903,444.61
  5. Step 5: Solve for x
    x = 654,903,444.61/28,176.57
  6. Step 6: Final answer
    x = 23,242.84

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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.