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Finding the Fourth Proportional to 188,907.16, 260,691.46 and 102,864.80

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Solution

The fourth proportional to 188,907.16, 260,691.46 and 102,864.80 is: 141,953.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,907.16 : 260,691.46 = 102,864.80 : x
  2. Step 2: Convert to fraction form
    188,907.16/260,691.46 = 102,864.80/x
  3. Step 3: Cross multiply
    188,907.16x = 260,691.46 × 102,864.80
  4. Step 4: Simplify right side
    188,907.16x = 26,815,974,894.61
  5. Step 5: Solve for x
    x = 26,815,974,894.61/188,907.16
  6. Step 6: Final answer
    x = 141,953.19

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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.