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Finding the Fourth Proportional to 129,975.88, 179,366.50 and 70,359.88

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Solution

The fourth proportional to 129,975.88, 179,366.50 and 70,359.88 is: 97,096.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,975.88 : 179,366.50 = 70,359.88 : x
  2. Step 2: Convert to fraction form
    129,975.88/179,366.50 = 70,359.88/x
  3. Step 3: Cross multiply
    129,975.88x = 179,366.50 × 70,359.88
  4. Step 4: Simplify right side
    129,975.88x = 12,620,205,416.02
  5. Step 5: Solve for x
    x = 12,620,205,416.02/129,975.88
  6. Step 6: Final answer
    x = 97,096.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.