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Finding the Fourth Proportional to 14,356.98, 19,812.42 and 8,069.31

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Solution

The fourth proportional to 14,356.98, 19,812.42 and 8,069.31 is: 11,135.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,356.98 : 19,812.42 = 8,069.31 : x
  2. Step 2: Convert to fraction form
    14,356.98/19,812.42 = 8,069.31/x
  3. Step 3: Cross multiply
    14,356.98x = 19,812.42 × 8,069.31
  4. Step 4: Simplify right side
    14,356.98x = 159,872,558.83
  5. Step 5: Solve for x
    x = 159,872,558.83/14,356.98
  6. Step 6: Final answer
    x = 11,135.53

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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.