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Finding the Fourth Proportional to 573,142.80, 859,721.40 and 173,787.60

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Solution

The fourth proportional to 573,142.80, 859,721.40 and 173,787.60 is: 260,683.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,142.80 : 859,721.40 = 173,787.60 : x
  2. Step 2: Convert to fraction form
    573,142.80/859,721.40 = 173,787.60/x
  3. Step 3: Cross multiply
    573,142.80x = 859,721.40 × 173,787.60
  4. Step 4: Simplify right side
    573,142.80x = 149,408,918,774.64
  5. Step 5: Solve for x
    x = 149,408,918,774.64/573,142.80
  6. Step 6: Final answer
    x = 260,683.58

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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.