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Finding the Fourth Proportional to 93,489.96, 129,019.16 and 51,051.72

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Solution

The fourth proportional to 93,489.96, 129,019.16 and 51,051.72 is: 70,453.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,489.96 : 129,019.16 = 51,051.72 : x
  2. Step 2: Convert to fraction form
    93,489.96/129,019.16 = 51,051.72/x
  3. Step 3: Cross multiply
    93,489.96x = 129,019.16 × 51,051.72
  4. Step 4: Simplify right side
    93,489.96x = 6,586,650,030.96
  5. Step 5: Solve for x
    x = 6,586,650,030.96/93,489.96
  6. Step 6: Final answer
    x = 70,453.02

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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.