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Finding the Fourth Proportional to 347,684.10, 521,526.15 and 126,039.30

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Solution

The fourth proportional to 347,684.10, 521,526.15 and 126,039.30 is: 189,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,684.10 : 521,526.15 = 126,039.30 : x
  2. Step 2: Convert to fraction form
    347,684.10/521,526.15 = 126,039.30/x
  3. Step 3: Cross multiply
    347,684.10x = 521,526.15 × 126,039.30
  4. Step 4: Simplify right side
    347,684.10x = 65,732,790,877.70
  5. Step 5: Solve for x
    x = 65,732,790,877.70/347,684.10
  6. Step 6: Final answer
    x = 189,058.95

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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.