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Finding the Fourth Proportional to 661,189.23, 991,794.78 and 287,212.23

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Solution

The fourth proportional to 661,189.23, 991,794.78 and 287,212.23 is: 430,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,189.23 : 991,794.78 = 287,212.23 : x
  2. Step 2: Convert to fraction form
    661,189.23/991,794.78 = 287,212.23/x
  3. Step 3: Cross multiply
    661,189.23x = 991,794.78 × 287,212.23
  4. Step 4: Simplify right side
    661,189.23x = 284,855,590,466.16
  5. Step 5: Solve for x
    x = 284,855,590,466.16/661,189.23
  6. Step 6: Final answer
    x = 430,823.10

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1.5x scale

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.