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Finding the Fourth Proportional to 28,892.63, 39,876.08 and 16,962.54

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Solution

The fourth proportional to 28,892.63, 39,876.08 and 16,962.54 is: 23,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,892.63 : 39,876.08 = 16,962.54 : x
  2. Step 2: Convert to fraction form
    28,892.63/39,876.08 = 16,962.54/x
  3. Step 3: Cross multiply
    28,892.63x = 39,876.08 × 16,962.54
  4. Step 4: Simplify right side
    28,892.63x = 676,399,602.04
  5. Step 5: Solve for x
    x = 676,399,602.04/28,892.63
  6. Step 6: Final answer
    x = 23,410.80

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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.