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Finding the Fourth Proportional to 377,220.81, 520,566.84 and 205,140.78

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Solution

The fourth proportional to 377,220.81, 520,566.84 and 205,140.78 is: 283,095.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,220.81 : 520,566.84 = 205,140.78 : x
  2. Step 2: Convert to fraction form
    377,220.81/520,566.84 = 205,140.78/x
  3. Step 3: Cross multiply
    377,220.81x = 520,566.84 × 205,140.78
  4. Step 4: Simplify right side
    377,220.81x = 106,789,487,599.74
  5. Step 5: Solve for x
    x = 106,789,487,599.74/377,220.81
  6. Step 6: Final answer
    x = 283,095.43

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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.