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Finding the Fourth Proportional to 189,993.60, 262,193.76 and 118,402.56

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Solution

The fourth proportional to 189,993.60, 262,193.76 and 118,402.56 is: 163,397.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,993.60 : 262,193.76 = 118,402.56 : x
  2. Step 2: Convert to fraction form
    189,993.60/262,193.76 = 118,402.56/x
  3. Step 3: Cross multiply
    189,993.60x = 262,193.76 × 118,402.56
  4. Step 4: Simplify right side
    189,993.60x = 31,044,412,400.03
  5. Step 5: Solve for x
    x = 31,044,412,400.03/189,993.60
  6. Step 6: Final answer
    x = 163,397.15

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1.5x scale

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.