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Finding the Fourth Proportional to 118,963.32, 178,388.48 and 69,058.86

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Solution

The fourth proportional to 118,963.32, 178,388.48 and 69,058.86 is: 103,555.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,963.32 : 178,388.48 = 69,058.86 : x
  2. Step 2: Convert to fraction form
    118,963.32/178,388.48 = 69,058.86/x
  3. Step 3: Cross multiply
    118,963.32x = 178,388.48 × 69,058.86
  4. Step 4: Simplify right side
    118,963.32x = 12,319,305,065.93
  5. Step 5: Solve for x
    x = 12,319,305,065.93/118,963.32
  6. Step 6: Final answer
    x = 103,555.49

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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.