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Finding the Fourth Proportional to 403,780.70, 604,358.85 and 403,780.70

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Solution

The fourth proportional to 403,780.70, 604,358.85 and 403,780.70 is: 604,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,780.70 : 604,358.85 = 403,780.70 : x
  2. Step 2: Convert to fraction form
    403,780.70/604,358.85 = 403,780.70/x
  3. Step 3: Cross multiply
    403,780.70x = 604,358.85 × 403,780.70
  4. Step 4: Simplify right side
    403,780.70x = 244,028,439,504.20
  5. Step 5: Solve for x
    x = 244,028,439,504.20/403,780.70
  6. Step 6: Final answer
    x = 604,358.85

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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.