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Finding the Fourth Proportional to 75,809.92, 104,561.28 and 55,660.48

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Solution

The fourth proportional to 75,809.92, 104,561.28 and 55,660.48 is: 76,770.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,809.92 : 104,561.28 = 55,660.48 : x
  2. Step 2: Convert to fraction form
    75,809.92/104,561.28 = 55,660.48/x
  3. Step 3: Cross multiply
    75,809.92x = 104,561.28 × 55,660.48
  4. Step 4: Simplify right side
    75,809.92x = 5,819,931,034.21
  5. Step 5: Solve for x
    x = 5,819,931,034.21/75,809.92
  6. Step 6: Final answer
    x = 76,770.05

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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.