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Finding the Fourth Proportional to 580,915.72, 871,714.50 and 243,930.34

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Solution

The fourth proportional to 580,915.72, 871,714.50 and 243,930.34 is: 366,038.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,915.72 : 871,714.50 = 243,930.34 : x
  2. Step 2: Convert to fraction form
    580,915.72/871,714.50 = 243,930.34/x
  3. Step 3: Cross multiply
    580,915.72x = 871,714.50 × 243,930.34
  4. Step 4: Simplify right side
    580,915.72x = 212,637,614,367.93
  5. Step 5: Solve for x
    x = 212,637,614,367.93/580,915.72
  6. Step 6: Final answer
    x = 366,038.66

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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.