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Finding the Fourth Proportional to 148,211.64, 204,650 and 136,877

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Solution

The fourth proportional to 148,211.64, 204,650 and 136,877 is: 188,999.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,211.64 : 204,650 = 136,877 : x
  2. Step 2: Convert to fraction form
    148,211.64/204,650 = 136,877/x
  3. Step 3: Cross multiply
    148,211.64x = 204,650 × 136,877
  4. Step 4: Simplify right side
    148,211.64x = 28,011,878,050
  5. Step 5: Solve for x
    x = 28,011,878,050/148,211.64
  6. Step 6: Final answer
    x = 188,999.18

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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.