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Finding the Fourth Proportional to 98,672.90, 136,135.32 and 56,201.36

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Solution

The fourth proportional to 98,672.90, 136,135.32 and 56,201.36 is: 77,538.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,672.90 : 136,135.32 = 56,201.36 : x
  2. Step 2: Convert to fraction form
    98,672.90/136,135.32 = 56,201.36/x
  3. Step 3: Cross multiply
    98,672.90x = 136,135.32 × 56,201.36
  4. Step 4: Simplify right side
    98,672.90x = 7,650,990,128.04
  5. Step 5: Solve for x
    x = 7,650,990,128.04/98,672.90
  6. Step 6: Final answer
    x = 77,538.92

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