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Finding the Fourth Proportional to 16,915, 25,372.59 and 4,603

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Solution

The fourth proportional to 16,915, 25,372.59 and 4,603 is: 6,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,915 : 25,372.59 = 4,603 : x
  2. Step 2: Convert to fraction form
    16,915/25,372.59 = 4,603/x
  3. Step 3: Cross multiply
    16,915x = 25,372.59 × 4,603
  4. Step 4: Simplify right side
    16,915x = 116,790,031.77
  5. Step 5: Solve for x
    x = 116,790,031.77/16,915
  6. Step 6: Final answer
    x = 6,904.52

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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.