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Finding the Fourth Proportional to 10,603.70, 15,905.55 and 3,583.73

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Solution

The fourth proportional to 10,603.70, 15,905.55 and 3,583.73 is: 5,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,603.70 : 15,905.55 = 3,583.73 : x
  2. Step 2: Convert to fraction form
    10,603.70/15,905.55 = 3,583.73/x
  3. Step 3: Cross multiply
    10,603.70x = 15,905.55 × 3,583.73
  4. Step 4: Simplify right side
    10,603.70x = 57,001,196.70
  5. Step 5: Solve for x
    x = 57,001,196.70/10,603.70
  6. Step 6: Final answer
    x = 5,375.60

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1.5x scale

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.