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Finding the Fourth Proportional to 357,536.80, 536,305.20 and 108,218.80

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Solution

The fourth proportional to 357,536.80, 536,305.20 and 108,218.80 is: 162,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,536.80 : 536,305.20 = 108,218.80 : x
  2. Step 2: Convert to fraction form
    357,536.80/536,305.20 = 108,218.80/x
  3. Step 3: Cross multiply
    357,536.80x = 536,305.20 × 108,218.80
  4. Step 4: Simplify right side
    357,536.80x = 58,038,305,177.76
  5. Step 5: Solve for x
    x = 58,038,305,177.76/357,536.80
  6. Step 6: Final answer
    x = 162,328.20

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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.