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Finding the Fourth Proportional to 149,454.70, 209,392.10 and 149,454.70

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Solution

The fourth proportional to 149,454.70, 209,392.10 and 149,454.70 is: 209,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,454.70 : 209,392.10 = 149,454.70 : x
  2. Step 2: Convert to fraction form
    149,454.70/209,392.10 = 149,454.70/x
  3. Step 3: Cross multiply
    149,454.70x = 209,392.10 × 149,454.70
  4. Step 4: Simplify right side
    149,454.70x = 31,294,633,487.87
  5. Step 5: Solve for x
    x = 31,294,633,487.87/149,454.70
  6. Step 6: Final answer
    x = 209,392.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.