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Finding the Fourth Proportional to 56,657.40, 84,913.20 and 34,447.20

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Solution

The fourth proportional to 56,657.40, 84,913.20 and 34,447.20 is: 51,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,657.40 : 84,913.20 = 34,447.20 : x
  2. Step 2: Convert to fraction form
    56,657.40/84,913.20 = 34,447.20/x
  3. Step 3: Cross multiply
    56,657.40x = 84,913.20 × 34,447.20
  4. Step 4: Simplify right side
    56,657.40x = 2,925,021,983.04
  5. Step 5: Solve for x
    x = 2,925,021,983.04/56,657.40
  6. Step 6: Final answer
    x = 51,626.48

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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.