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Finding the Fourth Proportional to 70,790.68, 106,075.83 and 26,405.50

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Solution

The fourth proportional to 70,790.68, 106,075.83 and 26,405.50 is: 39,567.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,790.68 : 106,075.83 = 26,405.50 : x
  2. Step 2: Convert to fraction form
    70,790.68/106,075.83 = 26,405.50/x
  3. Step 3: Cross multiply
    70,790.68x = 106,075.83 × 26,405.50
  4. Step 4: Simplify right side
    70,790.68x = 2,800,985,329.07
  5. Step 5: Solve for x
    x = 2,800,985,329.07/70,790.68
  6. Step 6: Final answer
    x = 39,567.15

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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.