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Finding the Fourth Proportional to 93,419.82, 128,922.08 and 50,981.09

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Solution

The fourth proportional to 93,419.82, 128,922.08 and 50,981.09 is: 70,355.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,419.82 : 128,922.08 = 50,981.09 : x
  2. Step 2: Convert to fraction form
    93,419.82/128,922.08 = 50,981.09/x
  3. Step 3: Cross multiply
    93,419.82x = 128,922.08 × 50,981.09
  4. Step 4: Simplify right side
    93,419.82x = 6,572,587,263.95
  5. Step 5: Solve for x
    x = 6,572,587,263.95/93,419.82
  6. Step 6: Final answer
    x = 70,355.38

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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.