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Finding the Fourth Proportional to 438,367.52, 605,085.02 and 257,152.70

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Solution

The fourth proportional to 438,367.52, 605,085.02 and 257,152.70 is: 354,951.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,367.52 : 605,085.02 = 257,152.70 : x
  2. Step 2: Convert to fraction form
    438,367.52/605,085.02 = 257,152.70/x
  3. Step 3: Cross multiply
    438,367.52x = 605,085.02 × 257,152.70
  4. Step 4: Simplify right side
    438,367.52x = 155,599,245,336.79
  5. Step 5: Solve for x
    x = 155,599,245,336.79/438,367.52
  6. Step 6: Final answer
    x = 354,951.58

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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.