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Finding the Fourth Proportional to 189,957.60, 262,144.08 and 118,366.56

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Solution

The fourth proportional to 189,957.60, 262,144.08 and 118,366.56 is: 163,347.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,957.60 : 262,144.08 = 118,366.56 : x
  2. Step 2: Convert to fraction form
    189,957.60/262,144.08 = 118,366.56/x
  3. Step 3: Cross multiply
    189,957.60x = 262,144.08 × 118,366.56
  4. Step 4: Simplify right side
    189,957.60x = 31,029,092,973.96
  5. Step 5: Solve for x
    x = 31,029,092,973.96/189,957.60
  6. Step 6: Final answer
    x = 163,347.47

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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.