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Finding the Fourth Proportional to 93,987.65, 129,703.11 and 51,546.44

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Solution

The fourth proportional to 93,987.65, 129,703.11 and 51,546.44 is: 71,134.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,987.65 : 129,703.11 = 51,546.44 : x
  2. Step 2: Convert to fraction form
    93,987.65/129,703.11 = 51,546.44/x
  3. Step 3: Cross multiply
    93,987.65x = 129,703.11 × 51,546.44
  4. Step 4: Simplify right side
    93,987.65x = 6,685,733,577.43
  5. Step 5: Solve for x
    x = 6,685,733,577.43/93,987.65
  6. Step 6: Final answer
    x = 71,134.17

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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.