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Finding the Fourth Proportional to 235,686.80, 353,530.20 and 161,037.20

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Solution

The fourth proportional to 235,686.80, 353,530.20 and 161,037.20 is: 241,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,686.80 : 353,530.20 = 161,037.20 : x
  2. Step 2: Convert to fraction form
    235,686.80/353,530.20 = 161,037.20/x
  3. Step 3: Cross multiply
    235,686.80x = 353,530.20 × 161,037.20
  4. Step 4: Simplify right side
    235,686.80x = 56,931,513,523.44
  5. Step 5: Solve for x
    x = 56,931,513,523.44/235,686.80
  6. Step 6: Final answer
    x = 241,555.80

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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.