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Finding the Fourth Proportional to 127,609.80, 191,457.32 and 56,522.78

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Solution

The fourth proportional to 127,609.80, 191,457.32 and 56,522.78 is: 84,803.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,609.80 : 191,457.32 = 56,522.78 : x
  2. Step 2: Convert to fraction form
    127,609.80/191,457.32 = 56,522.78/x
  3. Step 3: Cross multiply
    127,609.80x = 191,457.32 × 56,522.78
  4. Step 4: Simplify right side
    127,609.80x = 10,821,698,737.85
  5. Step 5: Solve for x
    x = 10,821,698,737.85/127,609.80
  6. Step 6: Final answer
    x = 84,803.04

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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.