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Finding the Fourth Proportional to 366,905.90, 550,358.85 and 307,856.90

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Solution

The fourth proportional to 366,905.90, 550,358.85 and 307,856.90 is: 461,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,905.90 : 550,358.85 = 307,856.90 : x
  2. Step 2: Convert to fraction form
    366,905.90/550,358.85 = 307,856.90/x
  3. Step 3: Cross multiply
    366,905.90x = 550,358.85 × 307,856.90
  4. Step 4: Simplify right side
    366,905.90x = 169,431,769,448.57
  5. Step 5: Solve for x
    x = 169,431,769,448.57/366,905.90
  6. Step 6: Final answer
    x = 461,785.35

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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.