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Finding the Fourth Proportional to 245,856.70, 368,785.05 and 243,523.90

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Solution

The fourth proportional to 245,856.70, 368,785.05 and 243,523.90 is: 365,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,856.70 : 368,785.05 = 243,523.90 : x
  2. Step 2: Convert to fraction form
    245,856.70/368,785.05 = 243,523.90/x
  3. Step 3: Cross multiply
    245,856.70x = 368,785.05 × 243,523.90
  4. Step 4: Simplify right side
    245,856.70x = 89,807,973,637.70
  5. Step 5: Solve for x
    x = 89,807,973,637.70/245,856.70
  6. Step 6: Final answer
    x = 365,285.85

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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.