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Finding the Fourth Proportional to 141,030.06, 194,619.15 and 77,373.78

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Solution

The fourth proportional to 141,030.06, 194,619.15 and 77,373.78 is: 106,774.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,030.06 : 194,619.15 = 77,373.78 : x
  2. Step 2: Convert to fraction form
    141,030.06/194,619.15 = 77,373.78/x
  3. Step 3: Cross multiply
    141,030.06x = 194,619.15 × 77,373.78
  4. Step 4: Simplify right side
    141,030.06x = 15,058,419,295.89
  5. Step 5: Solve for x
    x = 15,058,419,295.89/141,030.06
  6. Step 6: Final answer
    x = 106,774.54

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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.