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Finding the Fourth Proportional to 16,925, 25,387.50 and 4,613

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Solution

The fourth proportional to 16,925, 25,387.50 and 4,613 is: 6,919.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,925 : 25,387.50 = 4,613 : x
  2. Step 2: Convert to fraction form
    16,925/25,387.50 = 4,613/x
  3. Step 3: Cross multiply
    16,925x = 25,387.50 × 4,613
  4. Step 4: Simplify right side
    16,925x = 117,112,537.50
  5. Step 5: Solve for x
    x = 117,112,537.50/16,925
  6. Step 6: Final answer
    x = 6,919.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.