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Finding the Fourth Proportional to 127,006.64, 190,471.02 and 87,815.60

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Solution

The fourth proportional to 127,006.64, 190,471.02 and 87,815.60 is: 131,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,006.64 : 190,471.02 = 87,815.60 : x
  2. Step 2: Convert to fraction form
    127,006.64/190,471.02 = 87,815.60/x
  3. Step 3: Cross multiply
    127,006.64x = 190,471.02 × 87,815.60
  4. Step 4: Simplify right side
    127,006.64x = 16,726,326,903.91
  5. Step 5: Solve for x
    x = 16,726,326,903.91/127,006.64
  6. Step 6: Final answer
    x = 131,696.48

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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.