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Finding the Fourth Proportional to 572,722.20, 859,083.30 and 403,885.80

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Solution

The fourth proportional to 572,722.20, 859,083.30 and 403,885.80 is: 605,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,722.20 : 859,083.30 = 403,885.80 : x
  2. Step 2: Convert to fraction form
    572,722.20/859,083.30 = 403,885.80/x
  3. Step 3: Cross multiply
    572,722.20x = 859,083.30 × 403,885.80
  4. Step 4: Simplify right side
    572,722.20x = 346,971,545,887.14
  5. Step 5: Solve for x
    x = 346,971,545,887.14/572,722.20
  6. Step 6: Final answer
    x = 605,828.70

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Why These Related Problems?

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