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Finding the Fourth Proportional to 607,803.06, 911,716.32 and 187,078.50

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Solution

The fourth proportional to 607,803.06, 911,716.32 and 187,078.50 is: 280,621.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,803.06 : 911,716.32 = 187,078.50 : x
  2. Step 2: Convert to fraction form
    607,803.06/911,716.32 = 187,078.50/x
  3. Step 3: Cross multiply
    607,803.06x = 911,716.32 × 187,078.50
  4. Step 4: Simplify right side
    607,803.06x = 170,562,521,571.12
  5. Step 5: Solve for x
    x = 170,562,521,571.12/607,803.06
  6. Step 6: Final answer
    x = 280,621.36

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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.