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Finding the Fourth Proportional to 591,086.84, 815,700.74 and 336,438

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Solution

The fourth proportional to 591,086.84, 815,700.74 and 336,438 is: 464,284.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,086.84 : 815,700.74 = 336,438 : x
  2. Step 2: Convert to fraction form
    591,086.84/815,700.74 = 336,438/x
  3. Step 3: Cross multiply
    591,086.84x = 815,700.74 × 336,438
  4. Step 4: Simplify right side
    591,086.84x = 274,432,723,881.93
  5. Step 5: Solve for x
    x = 274,432,723,881.93/591,086.84
  6. Step 6: Final answer
    x = 464,284.95

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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.