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Finding the Fourth Proportional to 93,891, 129,569.64 and 51,451.08

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Solution

The fourth proportional to 93,891, 129,569.64 and 51,451.08 is: 71,002.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,891 : 129,569.64 = 51,451.08 : x
  2. Step 2: Convert to fraction form
    93,891/129,569.64 = 51,451.08/x
  3. Step 3: Cross multiply
    93,891x = 129,569.64 × 51,451.08
  4. Step 4: Simplify right side
    93,891x = 6,666,497,913.21
  5. Step 5: Solve for x
    x = 6,666,497,913.21/93,891
  6. Step 6: Final answer
    x = 71,002.52

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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.