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Finding the Fourth Proportional to 573,051.73, 790,811.55 and 318,402.92

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Solution

The fourth proportional to 573,051.73, 790,811.55 and 318,402.92 is: 439,396.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,051.73 : 790,811.55 = 318,402.92 : x
  2. Step 2: Convert to fraction form
    573,051.73/790,811.55 = 318,402.92/x
  3. Step 3: Cross multiply
    573,051.73x = 790,811.55 × 318,402.92
  4. Step 4: Simplify right side
    573,051.73x = 251,796,706,689.73
  5. Step 5: Solve for x
    x = 251,796,706,689.73/573,051.73
  6. Step 6: Final answer
    x = 439,396.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.