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Finding the Fourth Proportional to 13,295.78, 18,347.94 and 7,246.08

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Solution

The fourth proportional to 13,295.78, 18,347.94 and 7,246.08 is: 9,999.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,295.78 : 18,347.94 = 7,246.08 : x
  2. Step 2: Convert to fraction form
    13,295.78/18,347.94 = 7,246.08/x
  3. Step 3: Cross multiply
    13,295.78x = 18,347.94 × 7,246.08
  4. Step 4: Simplify right side
    13,295.78x = 132,950,641.08
  5. Step 5: Solve for x
    x = 132,950,641.08/13,295.78
  6. Step 6: Final answer
    x = 9,999.46

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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.