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Finding the Fourth Proportional to 93,809.85, 129,457.80 and 50,789.79

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Solution

The fourth proportional to 93,809.85, 129,457.80 and 50,789.79 is: 70,090.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,809.85 : 129,457.80 = 50,789.79 : x
  2. Step 2: Convert to fraction form
    93,809.85/129,457.80 = 50,789.79/x
  3. Step 3: Cross multiply
    93,809.85x = 129,457.80 × 50,789.79
  4. Step 4: Simplify right side
    93,809.85x = 6,575,134,475.86
  5. Step 5: Solve for x
    x = 6,575,134,475.86/93,809.85
  6. Step 6: Final answer
    x = 70,090.02

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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.