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Finding the Fourth Proportional to 141,295.88, 194,944.32 and 86,790.89

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Solution

The fourth proportional to 141,295.88, 194,944.32 and 86,790.89 is: 119,744.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,295.88 : 194,944.32 = 86,790.89 : x
  2. Step 2: Convert to fraction form
    141,295.88/194,944.32 = 86,790.89/x
  3. Step 3: Cross multiply
    141,295.88x = 194,944.32 × 86,790.89
  4. Step 4: Simplify right side
    141,295.88x = 16,919,390,058.52
  5. Step 5: Solve for x
    x = 16,919,390,058.52/141,295.88
  6. Step 6: Final answer
    x = 119,744.40

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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.