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Finding the Fourth Proportional to 77,337.78, 106,734.70 and 43,351.80

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Solution

The fourth proportional to 77,337.78, 106,734.70 and 43,351.80 is: 59,830.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,337.78 : 106,734.70 = 43,351.80 : x
  2. Step 2: Convert to fraction form
    77,337.78/106,734.70 = 43,351.80/x
  3. Step 3: Cross multiply
    77,337.78x = 106,734.70 × 43,351.80
  4. Step 4: Simplify right side
    77,337.78x = 4,627,141,367.46
  5. Step 5: Solve for x
    x = 4,627,141,367.46/77,337.78
  6. Step 6: Final answer
    x = 59,830.28

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1.5x scale

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.