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Finding the Fourth Proportional to 118,727.36, 163,858.24 and 70,980.16

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Solution

The fourth proportional to 118,727.36, 163,858.24 and 70,980.16 is: 97,961.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,727.36 : 163,858.24 = 70,980.16 : x
  2. Step 2: Convert to fraction form
    118,727.36/163,858.24 = 70,980.16/x
  3. Step 3: Cross multiply
    118,727.36x = 163,858.24 × 70,980.16
  4. Step 4: Simplify right side
    118,727.36x = 11,630,684,092.52
  5. Step 5: Solve for x
    x = 11,630,684,092.52/118,727.36
  6. Step 6: Final answer
    x = 97,961.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.