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Finding the Fourth Proportional to 129,708.79, 194,548.59 and 34,945.99

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Solution

The fourth proportional to 129,708.79, 194,548.59 and 34,945.99 is: 52,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,708.79 : 194,548.59 = 34,945.99 : x
  2. Step 2: Convert to fraction form
    129,708.79/194,548.59 = 34,945.99/x
  3. Step 3: Cross multiply
    129,708.79x = 194,548.59 × 34,945.99
  4. Step 4: Simplify right side
    129,708.79x = 6,798,692,594.28
  5. Step 5: Solve for x
    x = 6,798,692,594.28/129,708.79
  6. Step 6: Final answer
    x = 52,415.05

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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.