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Finding the Fourth Proportional to 189,303.92, 261,212.55 and 117,657.80

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Solution

The fourth proportional to 189,303.92, 261,212.55 and 117,657.80 is: 162,351.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,303.92 : 261,212.55 = 117,657.80 : x
  2. Step 2: Convert to fraction form
    189,303.92/261,212.55 = 117,657.80/x
  3. Step 3: Cross multiply
    189,303.92x = 261,212.55 × 117,657.80
  4. Step 4: Simplify right side
    189,303.92x = 30,733,693,965.39
  5. Step 5: Solve for x
    x = 30,733,693,965.39/189,303.92
  6. Step 6: Final answer
    x = 162,351.07

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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.