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Finding the Fourth Proportional to 141,876.35, 212,947.36 and 71,804.87

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Solution

The fourth proportional to 141,876.35, 212,947.36 and 71,804.87 is: 107,774.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,876.35 : 212,947.36 = 71,804.87 : x
  2. Step 2: Convert to fraction form
    141,876.35/212,947.36 = 71,804.87/x
  3. Step 3: Cross multiply
    141,876.35x = 212,947.36 × 71,804.87
  4. Step 4: Simplify right side
    141,876.35x = 15,290,657,501.64
  5. Step 5: Solve for x
    x = 15,290,657,501.64/141,876.35
  6. Step 6: Final answer
    x = 107,774.53

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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.