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Finding the Fourth Proportional to 347,280.64, 520,941.12 and 134,049.76

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Solution

The fourth proportional to 347,280.64, 520,941.12 and 134,049.76 is: 201,082.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,280.64 : 520,941.12 = 134,049.76 : x
  2. Step 2: Convert to fraction form
    347,280.64/520,941.12 = 134,049.76/x
  3. Step 3: Cross multiply
    347,280.64x = 520,941.12 × 134,049.76
  4. Step 4: Simplify right side
    347,280.64x = 69,832,032,110.13
  5. Step 5: Solve for x
    x = 69,832,032,110.13/347,280.64
  6. Step 6: Final answer
    x = 201,082.42

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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.