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Finding the Fourth Proportional to 99,608.58, 137,594.46 and 79,605.66

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Solution

The fourth proportional to 99,608.58, 137,594.46 and 79,605.66 is: 109,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,608.58 : 137,594.46 = 79,605.66 : x
  2. Step 2: Convert to fraction form
    99,608.58/137,594.46 = 79,605.66/x
  3. Step 3: Cross multiply
    99,608.58x = 137,594.46 × 79,605.66
  4. Step 4: Simplify right side
    99,608.58x = 10,953,297,800.64
  5. Step 5: Solve for x
    x = 10,953,297,800.64/99,608.58
  6. Step 6: Final answer
    x = 109,963.40

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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.