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Finding the Fourth Proportional to 93,472.56, 128,904.48 and 61,585.92

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Solution

The fourth proportional to 93,472.56, 128,904.48 and 61,585.92 is: 84,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,472.56 : 128,904.48 = 61,585.92 : x
  2. Step 2: Convert to fraction form
    93,472.56/128,904.48 = 61,585.92/x
  3. Step 3: Cross multiply
    93,472.56x = 128,904.48 × 61,585.92
  4. Step 4: Simplify right side
    93,472.56x = 7,938,700,992.92
  5. Step 5: Solve for x
    x = 7,938,700,992.92/93,472.56
  6. Step 6: Final answer
    x = 84,930.82

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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.