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Finding the Fourth Proportional to 77,805.36, 116,800.56 and 74,636.64

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Solution

The fourth proportional to 77,805.36, 116,800.56 and 74,636.64 is: 112,043.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,805.36 : 116,800.56 = 74,636.64 : x
  2. Step 2: Convert to fraction form
    77,805.36/116,800.56 = 74,636.64/x
  3. Step 3: Cross multiply
    77,805.36x = 116,800.56 × 74,636.64
  4. Step 4: Simplify right side
    77,805.36x = 8,717,601,348.52
  5. Step 5: Solve for x
    x = 8,717,601,348.52/77,805.36
  6. Step 6: Final answer
    x = 112,043.71

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1.5x scale

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.