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Finding the Fourth Proportional to 141,860.40, 212,839.20 and 63,031.20

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Solution

The fourth proportional to 141,860.40, 212,839.20 and 63,031.20 is: 94,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,860.40 : 212,839.20 = 63,031.20 : x
  2. Step 2: Convert to fraction form
    141,860.40/212,839.20 = 63,031.20/x
  3. Step 3: Cross multiply
    141,860.40x = 212,839.20 × 63,031.20
  4. Step 4: Simplify right side
    141,860.40x = 13,415,510,183.04
  5. Step 5: Solve for x
    x = 13,415,510,183.04/141,860.40
  6. Step 6: Final answer
    x = 94,568.39

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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.