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Finding the Fourth Proportional to 28,895.73, 39,878.97 and 16,958.81

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Solution

The fourth proportional to 28,895.73, 39,878.97 and 16,958.81 is: 23,404.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,895.73 : 39,878.97 = 16,958.81 : x
  2. Step 2: Convert to fraction form
    28,895.73/39,878.97 = 16,958.81/x
  3. Step 3: Cross multiply
    28,895.73x = 39,878.97 × 16,958.81
  4. Step 4: Simplify right side
    28,895.73x = 676,299,875.23
  5. Step 5: Solve for x
    x = 676,299,875.23/28,895.73
  6. Step 6: Final answer
    x = 23,404.84

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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.