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Finding the Fourth Proportional to 661,098.38, 991,928.16 and 361,228.68

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Solution

The fourth proportional to 661,098.38, 991,928.16 and 361,228.68 is: 541,996.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,098.38 : 991,928.16 = 361,228.68 : x
  2. Step 2: Convert to fraction form
    661,098.38/991,928.16 = 361,228.68/x
  3. Step 3: Cross multiply
    661,098.38x = 991,928.16 × 361,228.68
  4. Step 4: Simplify right side
    661,098.38x = 358,312,899,891.63
  5. Step 5: Solve for x
    x = 358,312,899,891.63/661,098.38
  6. Step 6: Final answer
    x = 541,996.34

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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.