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Finding the Fourth Proportional to 117,518,872.80, 176,065,732.80 and 100,512,760.80

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Solution

The fourth proportional to 117,518,872.80, 176,065,732.80 and 100,512,760.80 is: 150,587,326.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,518,872.80 : 176,065,732.80 = 100,512,760.80 : x
  2. Step 2: Convert to fraction form
    117,518,872.80/176,065,732.80 = 100,512,760.80/x
  3. Step 3: Cross multiply
    117,518,872.80x = 176,065,732.80 × 100,512,760.80
  4. Step 4: Simplify right side
    117,518,872.80x = 17,696,852,886,003,114
  5. Step 5: Solve for x
    x = 17,696,852,886,003,114/117,518,872.80
  6. Step 6: Final answer
    x = 150,587,326.65

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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.