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Finding the Fourth Proportional to 445,639.59, 668,412 and 125,783.55

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Solution

The fourth proportional to 445,639.59, 668,412 and 125,783.55 is: 188,661.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,639.59 : 668,412 = 125,783.55 : x
  2. Step 2: Convert to fraction form
    445,639.59/668,412 = 125,783.55/x
  3. Step 3: Cross multiply
    445,639.59x = 668,412 × 125,783.55
  4. Step 4: Simplify right side
    445,639.59x = 84,075,234,222.60
  5. Step 5: Solve for x
    x = 84,075,234,222.60/445,639.59
  6. Step 6: Final answer
    x = 188,661.95

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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.