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Finding the Fourth Proportional to 315,216.40, 472,867.80 and 104,832.40

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Solution

The fourth proportional to 315,216.40, 472,867.80 and 104,832.40 is: 157,262.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,216.40 : 472,867.80 = 104,832.40 : x
  2. Step 2: Convert to fraction form
    315,216.40/472,867.80 = 104,832.40/x
  3. Step 3: Cross multiply
    315,216.40x = 472,867.80 × 104,832.40
  4. Step 4: Simplify right side
    315,216.40x = 49,571,866,356.72
  5. Step 5: Solve for x
    x = 49,571,866,356.72/315,216.40
  6. Step 6: Final answer
    x = 157,262.97

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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.