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Finding the Fourth Proportional to 208,056.70, 312,085.05 and 194,934.70

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Solution

The fourth proportional to 208,056.70, 312,085.05 and 194,934.70 is: 292,402.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,056.70 : 312,085.05 = 194,934.70 : x
  2. Step 2: Convert to fraction form
    208,056.70/312,085.05 = 194,934.70/x
  3. Step 3: Cross multiply
    208,056.70x = 312,085.05 × 194,934.70
  4. Step 4: Simplify right side
    208,056.70x = 60,836,205,596.24
  5. Step 5: Solve for x
    x = 60,836,205,596.24/208,056.70
  6. Step 6: Final answer
    x = 292,402.05

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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.