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Finding the Fourth Proportional to 451,520.82, 623,117.81 and 257,960.39

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Solution

The fourth proportional to 451,520.82, 623,117.81 and 257,960.39 is: 355,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,520.82 : 623,117.81 = 257,960.39 : x
  2. Step 2: Convert to fraction form
    451,520.82/623,117.81 = 257,960.39/x
  3. Step 3: Cross multiply
    451,520.82x = 623,117.81 × 257,960.39
  4. Step 4: Simplify right side
    451,520.82x = 160,739,710,812.86
  5. Step 5: Solve for x
    x = 160,739,710,812.86/451,520.82
  6. Step 6: Final answer
    x = 355,996.23

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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.