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Finding the Fourth Proportional to 703,448.61, 970,759.95 and 381,158.46

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Solution

The fourth proportional to 703,448.61, 970,759.95 and 381,158.46 is: 525,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,448.61 : 970,759.95 = 381,158.46 : x
  2. Step 2: Convert to fraction form
    703,448.61/970,759.95 = 381,158.46/x
  3. Step 3: Cross multiply
    703,448.61x = 970,759.95 × 381,158.46
  4. Step 4: Simplify right side
    703,448.61x = 370,013,367,571.68
  5. Step 5: Solve for x
    x = 370,013,367,571.68/703,448.61
  6. Step 6: Final answer
    x = 525,999.15

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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.