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Finding the Fourth Proportional to 473,607.78, 709,915.44 and 220,679.74

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Solution

The fourth proportional to 473,607.78, 709,915.44 and 220,679.74 is: 330,788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,607.78 : 709,915.44 = 220,679.74 : x
  2. Step 2: Convert to fraction form
    473,607.78/709,915.44 = 220,679.74/x
  3. Step 3: Cross multiply
    473,607.78x = 709,915.44 × 220,679.74
  4. Step 4: Simplify right side
    473,607.78x = 156,663,954,721.19
  5. Step 5: Solve for x
    x = 156,663,954,721.19/473,607.78
  6. Step 6: Final answer
    x = 330,788.39

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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.