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Finding the Fourth Proportional to 545,713.80, 818,570.70 and 171,736.80

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Solution

The fourth proportional to 545,713.80, 818,570.70 and 171,736.80 is: 257,605.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,713.80 : 818,570.70 = 171,736.80 : x
  2. Step 2: Convert to fraction form
    545,713.80/818,570.70 = 171,736.80/x
  3. Step 3: Cross multiply
    545,713.80x = 818,570.70 × 171,736.80
  4. Step 4: Simplify right side
    545,713.80x = 140,578,712,591.76
  5. Step 5: Solve for x
    x = 140,578,712,591.76/545,713.80
  6. Step 6: Final answer
    x = 257,605.20

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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.