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Finding the Fourth Proportional to 890,069.92, 1,334,171.76 and 416,356

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Solution

The fourth proportional to 890,069.92, 1,334,171.76 and 416,356 is: 624,097.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,069.92 : 1,334,171.76 = 416,356 : x
  2. Step 2: Convert to fraction form
    890,069.92/1,334,171.76 = 416,356/x
  3. Step 3: Cross multiply
    890,069.92x = 1,334,171.76 × 416,356
  4. Step 4: Simplify right side
    890,069.92x = 555,490,417,306.56
  5. Step 5: Solve for x
    x = 555,490,417,306.56/890,069.92
  6. Step 6: Final answer
    x = 624,097.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.