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Finding the Fourth Proportional to 633,663.14, 874,421.69 and 361,720.22

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Solution

The fourth proportional to 633,663.14, 874,421.69 and 361,720.22 is: 499,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,663.14 : 874,421.69 = 361,720.22 : x
  2. Step 2: Convert to fraction form
    633,663.14/874,421.69 = 361,720.22/x
  3. Step 3: Cross multiply
    633,663.14x = 874,421.69 × 361,720.22
  4. Step 4: Simplify right side
    633,663.14x = 316,296,006,079.57
  5. Step 5: Solve for x
    x = 316,296,006,079.57/633,663.14
  6. Step 6: Final answer
    x = 499,154.81

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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.