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Finding the Fourth Proportional to 368,972.40, 553,098.60 and 189,057.84

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Solution

The fourth proportional to 368,972.40, 553,098.60 and 189,057.84 is: 283,402.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,972.40 : 553,098.60 = 189,057.84 : x
  2. Step 2: Convert to fraction form
    368,972.40/553,098.60 = 189,057.84/x
  3. Step 3: Cross multiply
    368,972.40x = 553,098.60 × 189,057.84
  4. Step 4: Simplify right side
    368,972.40x = 104,567,626,623.02
  5. Step 5: Solve for x
    x = 104,567,626,623.02/368,972.40
  6. Step 6: Final answer
    x = 283,402.30

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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.