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Finding the Fourth Proportional to 133,936.50, 201,706.80 and 121,979.10

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Solution

The fourth proportional to 133,936.50, 201,706.80 and 121,979.10 is: 183,699.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,936.50 : 201,706.80 = 121,979.10 : x
  2. Step 2: Convert to fraction form
    133,936.50/201,706.80 = 121,979.10/x
  3. Step 3: Cross multiply
    133,936.50x = 201,706.80 × 121,979.10
  4. Step 4: Simplify right side
    133,936.50x = 24,604,013,927.88
  5. Step 5: Solve for x
    x = 24,604,013,927.88/133,936.50
  6. Step 6: Final answer
    x = 183,699.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.