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Finding the Fourth Proportional to 532,186.80, 734,089.79 and 379,274.49

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Solution

The fourth proportional to 532,186.80, 734,089.79 and 379,274.49 is: 523,165.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,186.80 : 734,089.79 = 379,274.49 : x
  2. Step 2: Convert to fraction form
    532,186.80/734,089.79 = 379,274.49/x
  3. Step 3: Cross multiply
    532,186.80x = 734,089.79 × 379,274.49
  4. Step 4: Simplify right side
    532,186.80x = 278,421,533,144.32
  5. Step 5: Solve for x
    x = 278,421,533,144.32/532,186.80
  6. Step 6: Final answer
    x = 523,165.05

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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.