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Finding the Fourth Proportional to 405,802.91, 608,528.03 and 192,631.91

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Solution

The fourth proportional to 405,802.91, 608,528.03 and 192,631.91 is: 288,864.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,802.91 : 608,528.03 = 192,631.91 : x
  2. Step 2: Convert to fraction form
    405,802.91/608,528.03 = 192,631.91/x
  3. Step 3: Cross multiply
    405,802.91x = 608,528.03 × 192,631.91
  4. Step 4: Simplify right side
    405,802.91x = 117,221,912,701.64
  5. Step 5: Solve for x
    x = 117,221,912,701.64/405,802.91
  6. Step 6: Final answer
    x = 288,864.15

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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.