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Finding the Fourth Proportional to 124,512.70, 186,509.85 and 124,512.70

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Solution

The fourth proportional to 124,512.70, 186,509.85 and 124,512.70 is: 186,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,512.70 : 186,509.85 = 124,512.70 : x
  2. Step 2: Convert to fraction form
    124,512.70/186,509.85 = 124,512.70/x
  3. Step 3: Cross multiply
    124,512.70x = 186,509.85 × 124,512.70
  4. Step 4: Simplify right side
    124,512.70x = 23,222,845,000.10
  5. Step 5: Solve for x
    x = 23,222,845,000.10/124,512.70
  6. Step 6: Final answer
    x = 186,509.85

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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.