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Finding the Fourth Proportional to 115,428.70, 173,143.05 and 115,428.70

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Solution

The fourth proportional to 115,428.70, 173,143.05 and 115,428.70 is: 173,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,428.70 : 173,143.05 = 115,428.70 : x
  2. Step 2: Convert to fraction form
    115,428.70/173,143.05 = 115,428.70/x
  3. Step 3: Cross multiply
    115,428.70x = 173,143.05 × 115,428.70
  4. Step 4: Simplify right side
    115,428.70x = 19,985,677,175.54
  5. Step 5: Solve for x
    x = 19,985,677,175.54/115,428.70
  6. Step 6: Final answer
    x = 173,143.05

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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.