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Finding the Fourth Proportional to 318,506.58, 477,598.68 and 141,067.98

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Solution

The fourth proportional to 318,506.58, 477,598.68 and 141,067.98 is: 211,530.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,506.58 : 477,598.68 = 141,067.98 : x
  2. Step 2: Convert to fraction form
    318,506.58/477,598.68 = 141,067.98/x
  3. Step 3: Cross multiply
    318,506.58x = 477,598.68 × 141,067.98
  4. Step 4: Simplify right side
    318,506.58x = 67,373,881,038.27
  5. Step 5: Solve for x
    x = 67,373,881,038.27/318,506.58
  6. Step 6: Final answer
    x = 211,530.58

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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.