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Finding the Fourth Proportional to 573,699.40, 860,721.90 and 307,587.40

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Solution

The fourth proportional to 573,699.40, 860,721.90 and 307,587.40 is: 461,473.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,699.40 : 860,721.90 = 307,587.40 : x
  2. Step 2: Convert to fraction form
    573,699.40/860,721.90 = 307,587.40/x
  3. Step 3: Cross multiply
    573,699.40x = 860,721.90 × 307,587.40
  4. Step 4: Simplify right side
    573,699.40x = 264,747,211,344.06
  5. Step 5: Solve for x
    x = 264,747,211,344.06/573,699.40
  6. Step 6: Final answer
    x = 461,473.75

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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.