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Finding the Fourth Proportional to 545,694.38, 818,535.81 and 213,267.50

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Solution

The fourth proportional to 545,694.38, 818,535.81 and 213,267.50 is: 319,899.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,694.38 : 818,535.81 = 213,267.50 : x
  2. Step 2: Convert to fraction form
    545,694.38/818,535.81 = 213,267.50/x
  3. Step 3: Cross multiply
    545,694.38x = 818,535.81 × 213,267.50
  4. Step 4: Simplify right side
    545,694.38x = 174,567,085,859.18
  5. Step 5: Solve for x
    x = 174,567,085,859.18/545,694.38
  6. Step 6: Final answer
    x = 319,899.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.