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Finding the Fourth Proportional to 129,800.31, 194,700.44 and 54,901.01

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Solution

The fourth proportional to 129,800.31, 194,700.44 and 54,901.01 is: 82,351.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,800.31 : 194,700.44 = 54,901.01 : x
  2. Step 2: Convert to fraction form
    129,800.31/194,700.44 = 54,901.01/x
  3. Step 3: Cross multiply
    129,800.31x = 194,700.44 × 54,901.01
  4. Step 4: Simplify right side
    129,800.31x = 10,689,249,967.19
  5. Step 5: Solve for x
    x = 10,689,249,967.19/129,800.31
  6. Step 6: Final answer
    x = 82,351.50

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Double scale
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Similar ratio
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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.