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Finding the Fourth Proportional to 74,598.95, 102,947.86 and 40,608.41

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Solution

The fourth proportional to 74,598.95, 102,947.86 and 40,608.41 is: 56,040.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,598.95 : 102,947.86 = 40,608.41 : x
  2. Step 2: Convert to fraction form
    74,598.95/102,947.86 = 40,608.41/x
  3. Step 3: Cross multiply
    74,598.95x = 102,947.86 × 40,608.41
  4. Step 4: Simplify right side
    74,598.95x = 4,180,548,907.50
  5. Step 5: Solve for x
    x = 4,180,548,907.50/74,598.95
  6. Step 6: Final answer
    x = 56,040.32

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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.