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Finding the Fourth Proportional to 141,593.66, 194,978.04 and 138,450.86

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Solution

The fourth proportional to 141,593.66, 194,978.04 and 138,450.86 is: 190,650.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,593.66 : 194,978.04 = 138,450.86 : x
  2. Step 2: Convert to fraction form
    141,593.66/194,978.04 = 138,450.86/x
  3. Step 3: Cross multiply
    141,593.66x = 194,978.04 × 138,450.86
  4. Step 4: Simplify right side
    141,593.66x = 26,994,877,319.11
  5. Step 5: Solve for x
    x = 26,994,877,319.11/141,593.66
  6. Step 6: Final answer
    x = 190,650.33

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1.5x scale

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.