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Finding the Fourth Proportional to 188,435.54, 260,041.05 and 103,552.61

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Solution

The fourth proportional to 188,435.54, 260,041.05 and 103,552.61 is: 142,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,435.54 : 260,041.05 = 103,552.61 : x
  2. Step 2: Convert to fraction form
    188,435.54/260,041.05 = 103,552.61/x
  3. Step 3: Cross multiply
    188,435.54x = 260,041.05 × 103,552.61
  4. Step 4: Simplify right side
    188,435.54x = 26,927,928,134.44
  5. Step 5: Solve for x
    x = 26,927,928,134.44/188,435.54
  6. Step 6: Final answer
    x = 142,902.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.