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Finding the Fourth Proportional to 148,492.62, 204,920.01 and 81,424.62

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Solution

The fourth proportional to 148,492.62, 204,920.01 and 81,424.62 is: 112,366.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,492.62 : 204,920.01 = 81,424.62 : x
  2. Step 2: Convert to fraction form
    148,492.62/204,920.01 = 81,424.62/x
  3. Step 3: Cross multiply
    148,492.62x = 204,920.01 × 81,424.62
  4. Step 4: Simplify right side
    148,492.62x = 16,685,533,944.65
  5. Step 5: Solve for x
    x = 16,685,533,944.65/148,492.62
  6. Step 6: Final answer
    x = 112,366.08

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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.