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Finding the Fourth Proportional to 17,913.08, 26,870.98 and 4,765.08

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Solution

The fourth proportional to 17,913.08, 26,870.98 and 4,765.08 is: 7,147.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,913.08 : 26,870.98 = 4,765.08 : x
  2. Step 2: Convert to fraction form
    17,913.08/26,870.98 = 4,765.08/x
  3. Step 3: Cross multiply
    17,913.08x = 26,870.98 × 4,765.08
  4. Step 4: Simplify right side
    17,913.08x = 128,042,369.38
  5. Step 5: Solve for x
    x = 128,042,369.38/17,913.08
  6. Step 6: Final answer
    x = 7,147.98

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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.