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Finding the Fourth Proportional to 243,630.69, 336,212.74 and 136,206.60

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Solution

The fourth proportional to 243,630.69, 336,212.74 and 136,206.60 is: 187,966.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,630.69 : 336,212.74 = 136,206.60 : x
  2. Step 2: Convert to fraction form
    243,630.69/336,212.74 = 136,206.60/x
  3. Step 3: Cross multiply
    243,630.69x = 336,212.74 × 136,206.60
  4. Step 4: Simplify right side
    243,630.69x = 45,794,394,192.08
  5. Step 5: Solve for x
    x = 45,794,394,192.08/243,630.69
  6. Step 6: Final answer
    x = 187,966.44

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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.