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Finding the Fourth Proportional to 486,632.64, 671,546.40 and 271,776.48

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Solution

The fourth proportional to 486,632.64, 671,546.40 and 271,776.48 is: 375,047.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,632.64 : 671,546.40 = 271,776.48 : x
  2. Step 2: Convert to fraction form
    486,632.64/671,546.40 = 271,776.48/x
  3. Step 3: Cross multiply
    486,632.64x = 671,546.40 × 271,776.48
  4. Step 4: Simplify right side
    486,632.64x = 182,510,516,748.67
  5. Step 5: Solve for x
    x = 182,510,516,748.67/486,632.64
  6. Step 6: Final answer
    x = 375,047.83

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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.