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Finding the Fourth Proportional to 115,931.70, 162,654.30 and 115,931.70

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Solution

The fourth proportional to 115,931.70, 162,654.30 and 115,931.70 is: 162,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,931.70 : 162,654.30 = 115,931.70 : x
  2. Step 2: Convert to fraction form
    115,931.70/162,654.30 = 115,931.70/x
  3. Step 3: Cross multiply
    115,931.70x = 162,654.30 × 115,931.70
  4. Step 4: Simplify right side
    115,931.70x = 18,856,789,511.31
  5. Step 5: Solve for x
    x = 18,856,789,511.31/115,931.70
  6. Step 6: Final answer
    x = 162,654.30

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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.