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Finding the Fourth Proportional to 553,582.57, 764,000.39 and 338,864.53

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Solution

The fourth proportional to 553,582.57, 764,000.39 and 338,864.53 is: 467,667.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,582.57 : 764,000.39 = 338,864.53 : x
  2. Step 2: Convert to fraction form
    553,582.57/764,000.39 = 338,864.53/x
  3. Step 3: Cross multiply
    553,582.57x = 764,000.39 × 338,864.53
  4. Step 4: Simplify right side
    553,582.57x = 258,892,633,077.17
  5. Step 5: Solve for x
    x = 258,892,633,077.17/553,582.57
  6. Step 6: Final answer
    x = 467,667.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.