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Finding the Fourth Proportional to 141,603.67, 195,418.61 and 77,947.39

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Solution

The fourth proportional to 141,603.67, 195,418.61 and 77,947.39 is: 107,570.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,603.67 : 195,418.61 = 77,947.39 : x
  2. Step 2: Convert to fraction form
    141,603.67/195,418.61 = 77,947.39/x
  3. Step 3: Cross multiply
    141,603.67x = 195,418.61 × 77,947.39
  4. Step 4: Simplify right side
    141,603.67x = 15,232,370,606.93
  5. Step 5: Solve for x
    x = 15,232,370,606.93/141,603.67
  6. Step 6: Final answer
    x = 107,570.45

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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.