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Finding the Fourth Proportional to 93,421.75, 128,924.75 and 50,983.02

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Solution

The fourth proportional to 93,421.75, 128,924.75 and 50,983.02 is: 70,358.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,421.75 : 128,924.75 = 50,983.02 : x
  2. Step 2: Convert to fraction form
    93,421.75/128,924.75 = 50,983.02/x
  3. Step 3: Cross multiply
    93,421.75x = 128,924.75 × 50,983.02
  4. Step 4: Simplify right side
    93,421.75x = 6,572,973,107.75
  5. Step 5: Solve for x
    x = 6,572,973,107.75/93,421.75
  6. Step 6: Final answer
    x = 70,358.06

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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.