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Finding the Fourth Proportional to 14,442.31, 19,922.79 and 9,718.39

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Solution

The fourth proportional to 14,442.31, 19,922.79 and 9,718.39 is: 13,406.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,442.31 : 19,922.79 = 9,718.39 : x
  2. Step 2: Convert to fraction form
    14,442.31/19,922.79 = 9,718.39/x
  3. Step 3: Cross multiply
    14,442.31x = 19,922.79 × 9,718.39
  4. Step 4: Simplify right side
    14,442.31x = 193,617,443.11
  5. Step 5: Solve for x
    x = 193,617,443.11/14,442.31
  6. Step 6: Final answer
    x = 13,406.27

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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.