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Finding the Fourth Proportional to 518,191.71, 777,393.68 and 218,672.34

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Solution

The fourth proportional to 518,191.71, 777,393.68 and 218,672.34 is: 328,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,191.71 : 777,393.68 = 218,672.34 : x
  2. Step 2: Convert to fraction form
    518,191.71/777,393.68 = 218,672.34/x
  3. Step 3: Cross multiply
    518,191.71x = 777,393.68 × 218,672.34
  4. Step 4: Simplify right side
    518,191.71x = 169,994,494,013.45
  5. Step 5: Solve for x
    x = 169,994,494,013.45/518,191.71
  6. Step 6: Final answer
    x = 328,053.29

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1.5x scale

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.