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Finding the Fourth Proportional to 19,405.09, 29,113 and 7,726.51

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Solution

The fourth proportional to 19,405.09, 29,113 and 7,726.51 is: 11,591.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,405.09 : 29,113 = 7,726.51 : x
  2. Step 2: Convert to fraction form
    19,405.09/29,113 = 7,726.51/x
  3. Step 3: Cross multiply
    19,405.09x = 29,113 × 7,726.51
  4. Step 4: Simplify right side
    19,405.09x = 224,941,885.63
  5. Step 5: Solve for x
    x = 224,941,885.63/19,405.09
  6. Step 6: Final answer
    x = 11,591.90

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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.