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Finding the Fourth Proportional to 141,817.77, 212,763.56 and 53,078.13

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Solution

The fourth proportional to 141,817.77, 212,763.56 and 53,078.13 is: 79,631.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,817.77 : 212,763.56 = 53,078.13 : x
  2. Step 2: Convert to fraction form
    141,817.77/212,763.56 = 53,078.13/x
  3. Step 3: Cross multiply
    141,817.77x = 212,763.56 × 53,078.13
  4. Step 4: Simplify right side
    141,817.77x = 11,293,091,631.55
  5. Step 5: Solve for x
    x = 11,293,091,631.55/141,817.77
  6. Step 6: Final answer
    x = 79,631.01

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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.