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Finding the Fourth Proportional to 127,590.44, 191,401.32 and 43,364.48

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Solution

The fourth proportional to 127,590.44, 191,401.32 and 43,364.48 is: 65,052.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,590.44 : 191,401.32 = 43,364.48 : x
  2. Step 2: Convert to fraction form
    127,590.44/191,401.32 = 43,364.48/x
  3. Step 3: Cross multiply
    127,590.44x = 191,401.32 × 43,364.48
  4. Step 4: Simplify right side
    127,590.44x = 8,300,018,713.11
  5. Step 5: Solve for x
    x = 8,300,018,713.11/127,590.44
  6. Step 6: Final answer
    x = 65,052.04

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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.