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Finding the Fourth Proportional to 70,726.79, 106,075.27 and 20,793.33

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Solution

The fourth proportional to 70,726.79, 106,075.27 and 20,793.33 is: 31,185.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,726.79 : 106,075.27 = 20,793.33 : x
  2. Step 2: Convert to fraction form
    70,726.79/106,075.27 = 20,793.33/x
  3. Step 3: Cross multiply
    70,726.79x = 106,075.27 × 20,793.33
  4. Step 4: Simplify right side
    70,726.79x = 2,205,657,511.59
  5. Step 5: Solve for x
    x = 2,205,657,511.59/70,726.79
  6. Step 6: Final answer
    x = 31,185.60

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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.