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Finding the Fourth Proportional to 129,935.80, 194,903.70 and 70,886.80

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Solution

The fourth proportional to 129,935.80, 194,903.70 and 70,886.80 is: 106,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,935.80 : 194,903.70 = 70,886.80 : x
  2. Step 2: Convert to fraction form
    129,935.80/194,903.70 = 70,886.80/x
  3. Step 3: Cross multiply
    129,935.80x = 194,903.70 × 70,886.80
  4. Step 4: Simplify right side
    129,935.80x = 13,816,099,601.16
  5. Step 5: Solve for x
    x = 13,816,099,601.16/129,935.80
  6. Step 6: Final answer
    x = 106,330.20

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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.