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Finding the Fourth Proportional to 691,643.66, 954,469.12 and 381,539.23

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Solution

The fourth proportional to 691,643.66, 954,469.12 and 381,539.23 is: 526,524.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,643.66 : 954,469.12 = 381,539.23 : x
  2. Step 2: Convert to fraction form
    691,643.66/954,469.12 = 381,539.23/x
  3. Step 3: Cross multiply
    691,643.66x = 954,469.12 × 381,539.23
  4. Step 4: Simplify right side
    691,643.66x = 364,167,416,920.52
  5. Step 5: Solve for x
    x = 364,167,416,920.52/691,643.66
  6. Step 6: Final answer
    x = 526,524.62

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1.5x scale

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.