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Finding the Fourth Proportional to 573,135.24, 790,890.36 and 318,471.24

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Solution

The fourth proportional to 573,135.24, 790,890.36 and 318,471.24 is: 439,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,135.24 : 790,890.36 = 318,471.24 : x
  2. Step 2: Convert to fraction form
    573,135.24/790,890.36 = 318,471.24/x
  3. Step 3: Cross multiply
    573,135.24x = 790,890.36 × 318,471.24
  4. Step 4: Simplify right side
    573,135.24x = 251,875,833,653.25
  5. Step 5: Solve for x
    x = 251,875,833,653.25/573,135.24
  6. Step 6: Final answer
    x = 439,470.16

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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.