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Finding the Fourth Proportional to 103,075.74, 142,241.55 and 60,064.74

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Solution

The fourth proportional to 103,075.74, 142,241.55 and 60,064.74 is: 82,887.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,075.74 : 142,241.55 = 60,064.74 : x
  2. Step 2: Convert to fraction form
    103,075.74/142,241.55 = 60,064.74/x
  3. Step 3: Cross multiply
    103,075.74x = 142,241.55 × 60,064.74
  4. Step 4: Simplify right side
    103,075.74x = 8,543,701,717.95
  5. Step 5: Solve for x
    x = 8,543,701,717.95/103,075.74
  6. Step 6: Final answer
    x = 82,887.61

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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.