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Finding the Fourth Proportional to 473,137.80, 707,978.70 and 348,721.80

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Solution

The fourth proportional to 473,137.80, 707,978.70 and 348,721.80 is: 521,809.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,137.80 : 707,978.70 = 348,721.80 : x
  2. Step 2: Convert to fraction form
    473,137.80/707,978.70 = 348,721.80/x
  3. Step 3: Cross multiply
    473,137.80x = 707,978.70 × 348,721.80
  4. Step 4: Simplify right side
    473,137.80x = 246,887,606,625.66
  5. Step 5: Solve for x
    x = 246,887,606,625.66/473,137.80
  6. Step 6: Final answer
    x = 521,809.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.