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Finding the Fourth Proportional to 528,569.20, 791,104.20 and 409,596.40

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Solution

The fourth proportional to 528,569.20, 791,104.20 and 409,596.40 is: 613,038.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,569.20 : 791,104.20 = 409,596.40 : x
  2. Step 2: Convert to fraction form
    528,569.20/791,104.20 = 409,596.40/x
  3. Step 3: Cross multiply
    528,569.20x = 791,104.20 × 409,596.40
  4. Step 4: Simplify right side
    528,569.20x = 324,033,432,344.88
  5. Step 5: Solve for x
    x = 324,033,432,344.88/528,569.20
  6. Step 6: Final answer
    x = 613,038.81

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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.