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Finding the Fourth Proportional to 127,401, 191,101.90 and 38,655.24

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Solution

The fourth proportional to 127,401, 191,101.90 and 38,655.24 is: 57,982.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,401 : 191,101.90 = 38,655.24 : x
  2. Step 2: Convert to fraction form
    127,401/191,101.90 = 38,655.24/x
  3. Step 3: Cross multiply
    127,401x = 191,101.90 × 38,655.24
  4. Step 4: Simplify right side
    127,401x = 7,387,089,808.96
  5. Step 5: Solve for x
    x = 7,387,089,808.96/127,401
  6. Step 6: Final answer
    x = 57,982.98

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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.