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Finding the Fourth Proportional to 13,897.70, 19,174.08 and 7,925.06

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Solution

The fourth proportional to 13,897.70, 19,174.08 and 7,925.06 is: 10,933.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.70 : 19,174.08 = 7,925.06 : x
  2. Step 2: Convert to fraction form
    13,897.70/19,174.08 = 7,925.06/x
  3. Step 3: Cross multiply
    13,897.70x = 19,174.08 × 7,925.06
  4. Step 4: Simplify right side
    13,897.70x = 151,955,734.44
  5. Step 5: Solve for x
    x = 151,955,734.44/13,897.70
  6. Step 6: Final answer
    x = 10,933.88

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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.