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Finding the Fourth Proportional to 472,850.80, 707,548.20 and 348,434.80

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Solution

The fourth proportional to 472,850.80, 707,548.20 and 348,434.80 is: 521,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,850.80 : 707,548.20 = 348,434.80 : x
  2. Step 2: Convert to fraction form
    472,850.80/707,548.20 = 348,434.80/x
  3. Step 3: Cross multiply
    472,850.80x = 707,548.20 × 348,434.80
  4. Step 4: Simplify right side
    472,850.80x = 246,534,415,557.36
  5. Step 5: Solve for x
    x = 246,534,415,557.36/472,850.80
  6. Step 6: Final answer
    x = 521,378.87

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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.