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Finding the Fourth Proportional to 137,901.40, 206,900.70 and 133,041.40

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Solution

The fourth proportional to 137,901.40, 206,900.70 and 133,041.40 is: 199,608.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,901.40 : 206,900.70 = 133,041.40 : x
  2. Step 2: Convert to fraction form
    137,901.40/206,900.70 = 133,041.40/x
  3. Step 3: Cross multiply
    137,901.40x = 206,900.70 × 133,041.40
  4. Step 4: Simplify right side
    137,901.40x = 27,526,358,788.98
  5. Step 5: Solve for x
    x = 27,526,358,788.98/137,901.40
  6. Step 6: Final answer
    x = 199,608.99

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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.