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Finding the Fourth Proportional to 572,679.33, 790,692.89 and 357,915.93

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Solution

The fourth proportional to 572,679.33, 790,692.89 and 357,915.93 is: 494,171.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,679.33 : 790,692.89 = 357,915.93 : x
  2. Step 2: Convert to fraction form
    572,679.33/790,692.89 = 357,915.93/x
  3. Step 3: Cross multiply
    572,679.33x = 790,692.89 × 357,915.93
  4. Step 4: Simplify right side
    572,679.33x = 283,001,579,279.16
  5. Step 5: Solve for x
    x = 283,001,579,279.16/572,679.33
  6. Step 6: Final answer
    x = 494,171.11

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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.