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Finding the Fourth Proportional to 62,920.40, 86,810.61 and 35,692.00

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Solution

The fourth proportional to 62,920.40, 86,810.61 and 35,692.00 is: 49,243.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,920.40 : 86,810.61 = 35,692.00 : x
  2. Step 2: Convert to fraction form
    62,920.40/86,810.61 = 35,692.00/x
  3. Step 3: Cross multiply
    62,920.40x = 86,810.61 × 35,692.00
  4. Step 4: Simplify right side
    62,920.40x = 3,098,444,075.09
  5. Step 5: Solve for x
    x = 3,098,444,075.09/62,920.40
  6. Step 6: Final answer
    x = 49,243.87

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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.