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Finding the Fourth Proportional to 93,655.40, 129,247.52 and 51,213.92

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Solution

The fourth proportional to 93,655.40, 129,247.52 and 51,213.92 is: 70,676.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,655.40 : 129,247.52 = 51,213.92 : x
  2. Step 2: Convert to fraction form
    93,655.40/129,247.52 = 51,213.92/x
  3. Step 3: Cross multiply
    93,655.40x = 129,247.52 × 51,213.92
  4. Step 4: Simplify right side
    93,655.40x = 6,619,272,149.48
  5. Step 5: Solve for x
    x = 6,619,272,149.48/93,655.40
  6. Step 6: Final answer
    x = 70,676.89

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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.