Home / 78,859,236.63-109,382,501.55-76,761,816.15

Finding the Fourth Proportional to 78,859,236.63, 109,382,501.55 and 76,761,816.15

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Solution

The fourth proportional to 78,859,236.63, 109,382,501.55 and 76,761,816.15 is: 106,473,253.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859,236.63 : 109,382,501.55 = 76,761,816.15 : x
  2. Step 2: Convert to fraction form
    78,859,236.63/109,382,501.55 = 76,761,816.15/x
  3. Step 3: Cross multiply
    78,859,236.63x = 109,382,501.55 × 76,761,816.15
  4. Step 4: Simplify right side
    78,859,236.63x = 8,396,399,474,008,190
  5. Step 5: Solve for x
    x = 8,396,399,474,008,190/78,859,236.63
  6. Step 6: Final answer
    x = 106,473,253.27

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.