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Finding the Fourth Proportional to 93,322.05, 128,732.43 and 64,658.49

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Solution

The fourth proportional to 93,322.05, 128,732.43 and 64,658.49 is: 89,192.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,322.05 : 128,732.43 = 64,658.49 : x
  2. Step 2: Convert to fraction form
    93,322.05/128,732.43 = 64,658.49/x
  3. Step 3: Cross multiply
    93,322.05x = 128,732.43 × 64,658.49
  4. Step 4: Simplify right side
    93,322.05x = 8,323,644,537.83
  5. Step 5: Solve for x
    x = 8,323,644,537.83/93,322.05
  6. Step 6: Final answer
    x = 89,192.69

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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.