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Finding the Fourth Proportional to 528,234, 792,412.62 and 191,433.30

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Solution

The fourth proportional to 528,234, 792,412.62 and 191,433.30 is: 287,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,234 : 792,412.62 = 191,433.30 : x
  2. Step 2: Convert to fraction form
    528,234/792,412.62 = 191,433.30/x
  3. Step 3: Cross multiply
    528,234x = 792,412.62 × 191,433.30
  4. Step 4: Simplify right side
    528,234x = 151,694,162,808.25
  5. Step 5: Solve for x
    x = 151,694,162,808.25/528,234
  6. Step 6: Final answer
    x = 287,172.28

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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.