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Finding the Fourth Proportional to 77,473.30, 106,915.29 and 43,483.90

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Solution

The fourth proportional to 77,473.30, 106,915.29 and 43,483.90 is: 60,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,473.30 : 106,915.29 = 43,483.90 : x
  2. Step 2: Convert to fraction form
    77,473.30/106,915.29 = 43,483.90/x
  3. Step 3: Cross multiply
    77,473.30x = 106,915.29 × 43,483.90
  4. Step 4: Simplify right side
    77,473.30x = 4,649,093,778.83
  5. Step 5: Solve for x
    x = 4,649,093,778.83/77,473.30
  6. Step 6: Final answer
    x = 60,008.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.