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Finding the Fourth Proportional to 93,885, 129,561.30 and 51,445.14

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Solution

The fourth proportional to 93,885, 129,561.30 and 51,445.14 is: 70,994.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,885 : 129,561.30 = 51,445.14 : x
  2. Step 2: Convert to fraction form
    93,885/129,561.30 = 51,445.14/x
  3. Step 3: Cross multiply
    93,885x = 129,561.30 × 51,445.14
  4. Step 4: Simplify right side
    93,885x = 6,665,299,217.08
  5. Step 5: Solve for x
    x = 6,665,299,217.08/93,885
  6. Step 6: Final answer
    x = 70,994.29

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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.