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Finding the Fourth Proportional to 93,298.46, 128,749.10 and 53,015.90

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Solution

The fourth proportional to 93,298.46, 128,749.10 and 53,015.90 is: 73,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,298.46 : 128,749.10 = 53,015.90 : x
  2. Step 2: Convert to fraction form
    93,298.46/128,749.10 = 53,015.90/x
  3. Step 3: Cross multiply
    93,298.46x = 128,749.10 × 53,015.90
  4. Step 4: Simplify right side
    93,298.46x = 6,825,749,410.69
  5. Step 5: Solve for x
    x = 6,825,749,410.69/93,298.46
  6. Step 6: Final answer
    x = 73,160.37

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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.