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Finding the Fourth Proportional to 620,358.76, 930,538.54 and 199,634.52

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Solution

The fourth proportional to 620,358.76, 930,538.54 and 199,634.52 is: 299,451.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,358.76 : 930,538.54 = 199,634.52 : x
  2. Step 2: Convert to fraction form
    620,358.76/930,538.54 = 199,634.52/x
  3. Step 3: Cross multiply
    620,358.76x = 930,538.54 × 199,634.52
  4. Step 4: Simplify right side
    620,358.76x = 185,767,614,774.40
  5. Step 5: Solve for x
    x = 185,767,614,774.40/620,358.76
  6. Step 6: Final answer
    x = 299,451.91

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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.