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Finding the Fourth Proportional to 65,990.93, 90,945.33 and 46,871.56

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Solution

The fourth proportional to 65,990.93, 90,945.33 and 46,871.56 is: 64,595.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,990.93 : 90,945.33 = 46,871.56 : x
  2. Step 2: Convert to fraction form
    65,990.93/90,945.33 = 46,871.56/x
  3. Step 3: Cross multiply
    65,990.93x = 90,945.33 × 46,871.56
  4. Step 4: Simplify right side
    65,990.93x = 4,262,749,037.09
  5. Step 5: Solve for x
    x = 4,262,749,037.09/65,990.93
  6. Step 6: Final answer
    x = 64,595.98

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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.