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Finding the Fourth Proportional to 60,040.68, 90,075.80 and 42,305.98

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Solution

The fourth proportional to 60,040.68, 90,075.80 and 42,305.98 is: 63,469.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,040.68 : 90,075.80 = 42,305.98 : x
  2. Step 2: Convert to fraction form
    60,040.68/90,075.80 = 42,305.98/x
  3. Step 3: Cross multiply
    60,040.68x = 90,075.80 × 42,305.98
  4. Step 4: Simplify right side
    60,040.68x = 3,810,744,804.78
  5. Step 5: Solve for x
    x = 3,810,744,804.78/60,040.68
  6. Step 6: Final answer
    x = 63,469.38

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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.