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Finding the Fourth Proportional to 621,177.96, 857,197.98 and 379,864.92

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Solution

The fourth proportional to 621,177.96, 857,197.98 and 379,864.92 is: 524,196.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,177.96 : 857,197.98 = 379,864.92 : x
  2. Step 2: Convert to fraction form
    621,177.96/857,197.98 = 379,864.92/x
  3. Step 3: Cross multiply
    621,177.96x = 857,197.98 × 379,864.92
  4. Step 4: Simplify right side
    621,177.96x = 325,619,442,096.86
  5. Step 5: Solve for x
    x = 325,619,442,096.86/621,177.96
  6. Step 6: Final answer
    x = 524,196.71

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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.