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Finding the Fourth Proportional to 127,007.15, 190,486.43 and 63,809.76

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Solution

The fourth proportional to 127,007.15, 190,486.43 and 63,809.76 is: 95,702.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,007.15 : 190,486.43 = 63,809.76 : x
  2. Step 2: Convert to fraction form
    127,007.15/190,486.43 = 63,809.76/x
  3. Step 3: Cross multiply
    127,007.15x = 190,486.43 × 63,809.76
  4. Step 4: Simplify right side
    127,007.15x = 12,154,892,110.08
  5. Step 5: Solve for x
    x = 12,154,892,110.08/127,007.15
  6. Step 6: Final answer
    x = 95,702.43

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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.