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Finding the Fourth Proportional to 304,492.80, 455,864.40 and 186,394.80

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Solution

The fourth proportional to 304,492.80, 455,864.40 and 186,394.80 is: 279,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,492.80 : 455,864.40 = 186,394.80 : x
  2. Step 2: Convert to fraction form
    304,492.80/455,864.40 = 186,394.80/x
  3. Step 3: Cross multiply
    304,492.80x = 455,864.40 × 186,394.80
  4. Step 4: Simplify right side
    304,492.80x = 84,970,753,665.12
  5. Step 5: Solve for x
    x = 84,970,753,665.12/304,492.80
  6. Step 6: Final answer
    x = 279,056.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.