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Finding the Fourth Proportional to 77,190.88, 106,543.44 and 43,676.32

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Solution

The fourth proportional to 77,190.88, 106,543.44 and 43,676.32 is: 60,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,190.88 : 106,543.44 = 43,676.32 : x
  2. Step 2: Convert to fraction form
    77,190.88/106,543.44 = 43,676.32/x
  3. Step 3: Cross multiply
    77,190.88x = 106,543.44 × 43,676.32
  4. Step 4: Simplify right side
    77,190.88x = 4,653,425,379.34
  5. Step 5: Solve for x
    x = 4,653,425,379.34/77,190.88
  6. Step 6: Final answer
    x = 60,284.65

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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.