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Finding the Fourth Proportional to 238,863.12, 358,433.12 and 120,543.72

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Solution

The fourth proportional to 238,863.12, 358,433.12 and 120,543.72 is: 180,885.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,863.12 : 358,433.12 = 120,543.72 : x
  2. Step 2: Convert to fraction form
    238,863.12/358,433.12 = 120,543.72/x
  3. Step 3: Cross multiply
    238,863.12x = 358,433.12 × 120,543.72
  4. Step 4: Simplify right side
    238,863.12x = 43,206,861,656.01
  5. Step 5: Solve for x
    x = 43,206,861,656.01/238,863.12
  6. Step 6: Final answer
    x = 180,885.44

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1.5x scale

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.