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Finding the Fourth Proportional to 423,228.99, 584,055.18 and 229,636.64

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Solution

The fourth proportional to 423,228.99, 584,055.18 and 229,636.64 is: 316,898.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,228.99 : 584,055.18 = 229,636.64 : x
  2. Step 2: Convert to fraction form
    423,228.99/584,055.18 = 229,636.64/x
  3. Step 3: Cross multiply
    423,228.99x = 584,055.18 × 229,636.64
  4. Step 4: Simplify right side
    423,228.99x = 134,120,469,109.80
  5. Step 5: Solve for x
    x = 134,120,469,109.80/423,228.99
  6. Step 6: Final answer
    x = 316,898.11

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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.