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Finding the Fourth Proportional to 93,771.72, 129,379.32 and 53,470.80

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Solution

The fourth proportional to 93,771.72, 129,379.32 and 53,470.80 is: 73,775.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,771.72 : 129,379.32 = 53,470.80 : x
  2. Step 2: Convert to fraction form
    93,771.72/129,379.32 = 53,470.80/x
  3. Step 3: Cross multiply
    93,771.72x = 129,379.32 × 53,470.80
  4. Step 4: Simplify right side
    93,771.72x = 6,918,015,743.86
  5. Step 5: Solve for x
    x = 6,918,015,743.86/93,771.72
  6. Step 6: Final answer
    x = 73,775.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.