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Finding the Fourth Proportional to 93,519.72, 129,060 and 51,078.96

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Solution

The fourth proportional to 93,519.72, 129,060 and 51,078.96 is: 70,490.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,519.72 : 129,060 = 51,078.96 : x
  2. Step 2: Convert to fraction form
    93,519.72/129,060 = 51,078.96/x
  3. Step 3: Cross multiply
    93,519.72x = 129,060 × 51,078.96
  4. Step 4: Simplify right side
    93,519.72x = 6,592,250,577.60
  5. Step 5: Solve for x
    x = 6,592,250,577.60/93,519.72
  6. Step 6: Final answer
    x = 70,490.49

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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.