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Finding the Fourth Proportional to 423,869.76, 585,040.73 and 242,685.92

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Solution

The fourth proportional to 423,869.76, 585,040.73 and 242,685.92 is: 334,964.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,869.76 : 585,040.73 = 242,685.92 : x
  2. Step 2: Convert to fraction form
    423,869.76/585,040.73 = 242,685.92/x
  3. Step 3: Cross multiply
    423,869.76x = 585,040.73 × 242,685.92
  4. Step 4: Simplify right side
    423,869.76x = 141,981,148,046.69
  5. Step 5: Solve for x
    x = 141,981,148,046.69/423,869.76
  6. Step 6: Final answer
    x = 334,964.09

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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.