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Finding the Fourth Proportional to 135,458.64, 186,830.28 and 118,662.48

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Solution

The fourth proportional to 135,458.64, 186,830.28 and 118,662.48 is: 163,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,458.64 : 186,830.28 = 118,662.48 : x
  2. Step 2: Convert to fraction form
    135,458.64/186,830.28 = 118,662.48/x
  3. Step 3: Cross multiply
    135,458.64x = 186,830.28 × 118,662.48
  4. Step 4: Simplify right side
    135,458.64x = 22,169,744,363.89
  5. Step 5: Solve for x
    x = 22,169,744,363.89/135,458.64
  6. Step 6: Final answer
    x = 163,664.31

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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.