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Finding the Fourth Proportional to 93,900.64, 129,583.90 and 51,458.26

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Solution

The fourth proportional to 93,900.64, 129,583.90 and 51,458.26 is: 71,012.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,900.64 : 129,583.90 = 51,458.26 : x
  2. Step 2: Convert to fraction form
    93,900.64/129,583.90 = 51,458.26/x
  3. Step 3: Cross multiply
    93,900.64x = 129,583.90 × 51,458.26
  4. Step 4: Simplify right side
    93,900.64x = 6,668,162,018.01
  5. Step 5: Solve for x
    x = 6,668,162,018.01/93,900.64
  6. Step 6: Final answer
    x = 71,012.96

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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.