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Finding the Fourth Proportional to 99,506.19, 137,274.12 and 67,230.39

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Solution

The fourth proportional to 99,506.19, 137,274.12 and 67,230.39 is: 92,747.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,506.19 : 137,274.12 = 67,230.39 : x
  2. Step 2: Convert to fraction form
    99,506.19/137,274.12 = 67,230.39/x
  3. Step 3: Cross multiply
    99,506.19x = 137,274.12 × 67,230.39
  4. Step 4: Simplify right side
    99,506.19x = 9,228,992,624.51
  5. Step 5: Solve for x
    x = 9,228,992,624.51/99,506.19
  6. Step 6: Final answer
    x = 92,747.92

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Double scale
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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.