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Finding the Fourth Proportional to 355,051.20, 532,576.80 and 105,700.80

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Solution

The fourth proportional to 355,051.20, 532,576.80 and 105,700.80 is: 158,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,051.20 : 532,576.80 = 105,700.80 : x
  2. Step 2: Convert to fraction form
    355,051.20/532,576.80 = 105,700.80/x
  3. Step 3: Cross multiply
    355,051.20x = 532,576.80 × 105,700.80
  4. Step 4: Simplify right side
    355,051.20x = 56,293,793,821.44
  5. Step 5: Solve for x
    x = 56,293,793,821.44/355,051.20
  6. Step 6: Final answer
    x = 158,551.20

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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.