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Finding the Fourth Proportional to 318,118.51, 477,165.30 and 107,756.44

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Solution

The fourth proportional to 318,118.51, 477,165.30 and 107,756.44 is: 161,630.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,118.51 : 477,165.30 = 107,756.44 : x
  2. Step 2: Convert to fraction form
    318,118.51/477,165.30 = 107,756.44/x
  3. Step 3: Cross multiply
    318,118.51x = 477,165.30 × 107,756.44
  4. Step 4: Simplify right side
    318,118.51x = 51,417,634,019.53
  5. Step 5: Solve for x
    x = 51,417,634,019.53/318,118.51
  6. Step 6: Final answer
    x = 161,630.44

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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.