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Finding the Fourth Proportional to 93,930.40, 129,628.92 and 51,490.72

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Solution

The fourth proportional to 93,930.40, 129,628.92 and 51,490.72 is: 71,059.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,930.40 : 129,628.92 = 51,490.72 : x
  2. Step 2: Convert to fraction form
    93,930.40/129,628.92 = 51,490.72/x
  3. Step 3: Cross multiply
    93,930.40x = 129,628.92 × 51,490.72
  4. Step 4: Simplify right side
    93,930.40x = 6,674,686,423.62
  5. Step 5: Solve for x
    x = 6,674,686,423.62/93,930.40
  6. Step 6: Final answer
    x = 71,059.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.