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Finding the Fourth Proportional to 353,478.80, 530,218.20 and 116,829.20

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Solution

The fourth proportional to 353,478.80, 530,218.20 and 116,829.20 is: 175,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,478.80 : 530,218.20 = 116,829.20 : x
  2. Step 2: Convert to fraction form
    353,478.80/530,218.20 = 116,829.20/x
  3. Step 3: Cross multiply
    353,478.80x = 530,218.20 × 116,829.20
  4. Step 4: Simplify right side
    353,478.80x = 61,944,968,131.44
  5. Step 5: Solve for x
    x = 61,944,968,131.44/353,478.80
  6. Step 6: Final answer
    x = 175,243.80

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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.