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Finding the Fourth Proportional to 208,027.60, 312,041.40 and 124,046.80

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Solution

The fourth proportional to 208,027.60, 312,041.40 and 124,046.80 is: 186,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,027.60 : 312,041.40 = 124,046.80 : x
  2. Step 2: Convert to fraction form
    208,027.60/312,041.40 = 124,046.80/x
  3. Step 3: Cross multiply
    208,027.60x = 312,041.40 × 124,046.80
  4. Step 4: Simplify right side
    208,027.60x = 38,707,737,137.52
  5. Step 5: Solve for x
    x = 38,707,737,137.52/208,027.60
  6. Step 6: Final answer
    x = 186,070.20

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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.