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Finding the Fourth Proportional to 74,888.70, 103,363.74 and 43,075.98

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Solution

The fourth proportional to 74,888.70, 103,363.74 and 43,075.98 is: 59,454.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,888.70 : 103,363.74 = 43,075.98 : x
  2. Step 2: Convert to fraction form
    74,888.70/103,363.74 = 43,075.98/x
  3. Step 3: Cross multiply
    74,888.70x = 103,363.74 × 43,075.98
  4. Step 4: Simplify right side
    74,888.70x = 4,452,494,396.97
  5. Step 5: Solve for x
    x = 4,452,494,396.97/74,888.70
  6. Step 6: Final answer
    x = 59,454.82

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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.