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Finding the Fourth Proportional to 572,371.11, 789,832.62 and 317,702.25

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Solution

The fourth proportional to 572,371.11, 789,832.62 and 317,702.25 is: 438,407.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,371.11 : 789,832.62 = 317,702.25 : x
  2. Step 2: Convert to fraction form
    572,371.11/789,832.62 = 317,702.25/x
  3. Step 3: Cross multiply
    572,371.11x = 789,832.62 × 317,702.25
  4. Step 4: Simplify right side
    572,371.11x = 250,931,600,497.40
  5. Step 5: Solve for x
    x = 250,931,600,497.40/572,371.11
  6. Step 6: Final answer
    x = 438,407.17

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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.