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Finding the Fourth Proportional to 356,967.12, 535,452.53 and 120,311.85

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Solution

The fourth proportional to 356,967.12, 535,452.53 and 120,311.85 is: 180,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,967.12 : 535,452.53 = 120,311.85 : x
  2. Step 2: Convert to fraction form
    356,967.12/535,452.53 = 120,311.85/x
  3. Step 3: Cross multiply
    356,967.12x = 535,452.53 × 120,311.85
  4. Step 4: Simplify right side
    356,967.12x = 64,421,283,869.92
  5. Step 5: Solve for x
    x = 64,421,283,869.92/356,967.12
  6. Step 6: Final answer
    x = 180,468.40

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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.