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Finding the Fourth Proportional to 14,009.58, 19,333.20 and 7,721.97

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Solution

The fourth proportional to 14,009.58, 19,333.20 and 7,721.97 is: 10,656.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.58 : 19,333.20 = 7,721.97 : x
  2. Step 2: Convert to fraction form
    14,009.58/19,333.20 = 7,721.97/x
  3. Step 3: Cross multiply
    14,009.58x = 19,333.20 × 7,721.97
  4. Step 4: Simplify right side
    14,009.58x = 149,290,390.40
  5. Step 5: Solve for x
    x = 149,290,390.40/14,009.58
  6. Step 6: Final answer
    x = 10,656.31

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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.