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Finding the Fourth Proportional to 661,609.23, 912,684.11 and 432,300.57

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Solution

The fourth proportional to 661,609.23, 912,684.11 and 432,300.57 is: 596,354.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,609.23 : 912,684.11 = 432,300.57 : x
  2. Step 2: Convert to fraction form
    661,609.23/912,684.11 = 432,300.57/x
  3. Step 3: Cross multiply
    661,609.23x = 912,684.11 × 432,300.57
  4. Step 4: Simplify right side
    661,609.23x = 394,553,860,982.94
  5. Step 5: Solve for x
    x = 394,553,860,982.94/661,609.23
  6. Step 6: Final answer
    x = 596,354.83

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1.5x scale

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.