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Finding the Fourth Proportional to 93,444, 128,964.60 and 61,679.04

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Solution

The fourth proportional to 93,444, 128,964.60 and 61,679.04 is: 85,124.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,444 : 128,964.60 = 61,679.04 : x
  2. Step 2: Convert to fraction form
    93,444/128,964.60 = 61,679.04/x
  3. Step 3: Cross multiply
    93,444x = 128,964.60 × 61,679.04
  4. Step 4: Simplify right side
    93,444x = 7,954,412,721.98
  5. Step 5: Solve for x
    x = 7,954,412,721.98/93,444
  6. Step 6: Final answer
    x = 85,124.92

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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.