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Finding the Fourth Proportional to 13,866.59, 19,135.89 and 7,898.81

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Solution

The fourth proportional to 13,866.59, 19,135.89 and 7,898.81 is: 10,900.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.59 : 19,135.89 = 7,898.81 : x
  2. Step 2: Convert to fraction form
    13,866.59/19,135.89 = 7,898.81/x
  3. Step 3: Cross multiply
    13,866.59x = 19,135.89 × 7,898.81
  4. Step 4: Simplify right side
    13,866.59x = 151,150,759.29
  5. Step 5: Solve for x
    x = 151,150,759.29/13,866.59
  6. Step 6: Final answer
    x = 10,900.36

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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.