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Finding the Fourth Proportional to 14,340.81, 21,509.00 and 7,326.01

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Solution

The fourth proportional to 14,340.81, 21,509.00 and 7,326.01 is: 10,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,340.81 : 21,509.00 = 7,326.01 : x
  2. Step 2: Convert to fraction form
    14,340.81/21,509.00 = 7,326.01/x
  3. Step 3: Cross multiply
    14,340.81x = 21,509.00 × 7,326.01
  4. Step 4: Simplify right side
    14,340.81x = 157,575,112.46
  5. Step 5: Solve for x
    x = 157,575,112.46/14,340.81
  6. Step 6: Final answer
    x = 10,987.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.