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Finding the Fourth Proportional to 472,847.80, 707,543.70 and 348,431.80

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Solution

The fourth proportional to 472,847.80, 707,543.70 and 348,431.80 is: 521,374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,847.80 : 707,543.70 = 348,431.80 : x
  2. Step 2: Convert to fraction form
    472,847.80/707,543.70 = 348,431.80/x
  3. Step 3: Cross multiply
    472,847.80x = 707,543.70 × 348,431.80
  4. Step 4: Simplify right side
    472,847.80x = 246,530,724,969.66
  5. Step 5: Solve for x
    x = 246,530,724,969.66/472,847.80
  6. Step 6: Final answer
    x = 521,374.37

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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.