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Finding the Fourth Proportional to 661,798.62, 992,676.85 and 393,763.14

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Solution

The fourth proportional to 661,798.62, 992,676.85 and 393,763.14 is: 590,632.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,798.62 : 992,676.85 = 393,763.14 : x
  2. Step 2: Convert to fraction form
    661,798.62/992,676.85 = 393,763.14/x
  3. Step 3: Cross multiply
    661,798.62x = 992,676.85 × 393,763.14
  4. Step 4: Simplify right side
    661,798.62x = 390,879,553,461.31
  5. Step 5: Solve for x
    x = 390,879,553,461.31/661,798.62
  6. Step 6: Final answer
    x = 590,632.17

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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.