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Finding the Fourth Proportional to 13,865.44, 19,133.88 and 7,897.96

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Solution

The fourth proportional to 13,865.44, 19,133.88 and 7,897.96 is: 10,898.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.44 : 19,133.88 = 7,897.96 : x
  2. Step 2: Convert to fraction form
    13,865.44/19,133.88 = 7,897.96/x
  3. Step 3: Cross multiply
    13,865.44x = 19,133.88 × 7,897.96
  4. Step 4: Simplify right side
    13,865.44x = 151,118,618.88
  5. Step 5: Solve for x
    x = 151,118,618.88/13,865.44
  6. Step 6: Final answer
    x = 10,898.94

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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.