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Finding the Fourth Proportional to 60,609.98, 90,929.28 and 19,056.98

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Solution

The fourth proportional to 60,609.98, 90,929.28 and 19,056.98 is: 28,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,609.98 : 90,929.28 = 19,056.98 : x
  2. Step 2: Convert to fraction form
    60,609.98/90,929.28 = 19,056.98/x
  3. Step 3: Cross multiply
    60,609.98x = 90,929.28 × 19,056.98
  4. Step 4: Simplify right side
    60,609.98x = 1,732,837,470.37
  5. Step 5: Solve for x
    x = 1,732,837,470.37/60,609.98
  6. Step 6: Final answer
    x = 28,589.97

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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.