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Finding the Fourth Proportional to 423,161.72, 583,951.77 and 257,527.56

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Solution

The fourth proportional to 423,161.72, 583,951.77 and 257,527.56 is: 355,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,161.72 : 583,951.77 = 257,527.56 : x
  2. Step 2: Convert to fraction form
    423,161.72/583,951.77 = 257,527.56/x
  3. Step 3: Cross multiply
    423,161.72x = 583,951.77 × 257,527.56
  4. Step 4: Simplify right side
    423,161.72x = 150,383,675,854.42
  5. Step 5: Solve for x
    x = 150,383,675,854.42/423,161.72
  6. Step 6: Final answer
    x = 355,381.10

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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.