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Finding the Fourth Proportional to 424,613.62, 636,920.43 and 109,070.83

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Solution

The fourth proportional to 424,613.62, 636,920.43 and 109,070.83 is: 163,606.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,613.62 : 636,920.43 = 109,070.83 : x
  2. Step 2: Convert to fraction form
    424,613.62/636,920.43 = 109,070.83/x
  3. Step 3: Cross multiply
    424,613.62x = 636,920.43 × 109,070.83
  4. Step 4: Simplify right side
    424,613.62x = 69,469,439,944.06
  5. Step 5: Solve for x
    x = 69,469,439,944.06/424,613.62
  6. Step 6: Final answer
    x = 163,606.25

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1.5x scale

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.