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Finding the Fourth Proportional to 103,472.80, 155,124.54 and 53,567.15

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Solution

The fourth proportional to 103,472.80, 155,124.54 and 53,567.15 is: 80,306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,472.80 : 155,124.54 = 53,567.15 : x
  2. Step 2: Convert to fraction form
    103,472.80/155,124.54 = 53,567.15/x
  3. Step 3: Cross multiply
    103,472.80x = 155,124.54 × 53,567.15
  4. Step 4: Simplify right side
    103,472.80x = 8,309,578,727.24
  5. Step 5: Solve for x
    x = 8,309,578,727.24/103,472.80
  6. Step 6: Final answer
    x = 80,306.89

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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.