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Finding the Fourth Proportional to 440,658.96, 661,031.40 and 141,064.08

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Solution

The fourth proportional to 440,658.96, 661,031.40 and 141,064.08 is: 211,609.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,658.96 : 661,031.40 = 141,064.08 : x
  2. Step 2: Convert to fraction form
    440,658.96/661,031.40 = 141,064.08/x
  3. Step 3: Cross multiply
    440,658.96x = 661,031.40 × 141,064.08
  4. Step 4: Simplify right side
    440,658.96x = 93,247,786,292.11
  5. Step 5: Solve for x
    x = 93,247,786,292.11/440,658.96
  6. Step 6: Final answer
    x = 211,609.87

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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.