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Finding the Fourth Proportional to 193,037.76, 289,485.44 and 66,645.68

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Solution

The fourth proportional to 193,037.76, 289,485.44 and 66,645.68 is: 99,943.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,037.76 : 289,485.44 = 66,645.68 : x
  2. Step 2: Convert to fraction form
    193,037.76/289,485.44 = 66,645.68/x
  3. Step 3: Cross multiply
    193,037.76x = 289,485.44 × 66,645.68
  4. Step 4: Simplify right side
    193,037.76x = 19,292,953,998.90
  5. Step 5: Solve for x
    x = 19,292,953,998.90/193,037.76
  6. Step 6: Final answer
    x = 99,943.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.