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Finding the Fourth Proportional to 136,855,928.16, 188,859,604.32 and 74,130,841.44

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Solution

The fourth proportional to 136,855,928.16, 188,859,604.32 and 74,130,841.44 is: 102,299,707.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,855,928.16 : 188,859,604.32 = 74,130,841.44 : x
  2. Step 2: Convert to fraction form
    136,855,928.16/188,859,604.32 = 74,130,841.44/x
  3. Step 3: Cross multiply
    136,855,928.16x = 188,859,604.32 × 74,130,841.44
  4. Step 4: Simplify right side
    136,855,928.16x = 14,000,321,382,267,058
  5. Step 5: Solve for x
    x = 14,000,321,382,267,058/136,855,928.16
  6. Step 6: Final answer
    x = 102,299,707.22

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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.