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Finding the Fourth Proportional to 136,011.70, 204,084.60 and 61,184.80

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Solution

The fourth proportional to 136,011.70, 204,084.60 and 61,184.80 is: 91,807.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,011.70 : 204,084.60 = 61,184.80 : x
  2. Step 2: Convert to fraction form
    136,011.70/204,084.60 = 61,184.80/x
  3. Step 3: Cross multiply
    136,011.70x = 204,084.60 × 61,184.80
  4. Step 4: Simplify right side
    136,011.70x = 12,486,875,434.08
  5. Step 5: Solve for x
    x = 12,486,875,434.08/136,011.70
  6. Step 6: Final answer
    x = 91,807.36

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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.