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Finding the Fourth Proportional to 28,794.66, 39,746.58 and 16,861.84

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Solution

The fourth proportional to 28,794.66, 39,746.58 and 16,861.84 is: 23,275.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,794.66 : 39,746.58 = 16,861.84 : x
  2. Step 2: Convert to fraction form
    28,794.66/39,746.58 = 16,861.84/x
  3. Step 3: Cross multiply
    28,794.66x = 39,746.58 × 16,861.84
  4. Step 4: Simplify right side
    28,794.66x = 670,200,472.51
  5. Step 5: Solve for x
    x = 670,200,472.51/28,794.66
  6. Step 6: Final answer
    x = 23,275.17

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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.