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Finding the Fourth Proportional to 400,038.40, 600,057.60 and 242,574.40

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Solution

The fourth proportional to 400,038.40, 600,057.60 and 242,574.40 is: 363,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,038.40 : 600,057.60 = 242,574.40 : x
  2. Step 2: Convert to fraction form
    400,038.40/600,057.60 = 242,574.40/x
  3. Step 3: Cross multiply
    400,038.40x = 600,057.60 × 242,574.40
  4. Step 4: Simplify right side
    400,038.40x = 145,558,612,285.44
  5. Step 5: Solve for x
    x = 145,558,612,285.44/400,038.40
  6. Step 6: Final answer
    x = 363,861.60

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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.