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Finding the Fourth Proportional to 517,999.94, 714,812.18 and 285,419.66

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Solution

The fourth proportional to 517,999.94, 714,812.18 and 285,419.66 is: 393,863.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,999.94 : 714,812.18 = 285,419.66 : x
  2. Step 2: Convert to fraction form
    517,999.94/714,812.18 = 285,419.66/x
  3. Step 3: Cross multiply
    517,999.94x = 714,812.18 × 285,419.66
  4. Step 4: Simplify right side
    517,999.94x = 204,021,449,379.46
  5. Step 5: Solve for x
    x = 204,021,449,379.46/517,999.94
  6. Step 6: Final answer
    x = 393,863.85

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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.