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Finding the Fourth Proportional to 98,761.76, 136,290.96 and 53,440.51

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Solution

The fourth proportional to 98,761.76, 136,290.96 and 53,440.51 is: 73,747.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,761.76 : 136,290.96 = 53,440.51 : x
  2. Step 2: Convert to fraction form
    98,761.76/136,290.96 = 53,440.51/x
  3. Step 3: Cross multiply
    98,761.76x = 136,290.96 × 53,440.51
  4. Step 4: Simplify right side
    98,761.76x = 7,283,458,410.79
  5. Step 5: Solve for x
    x = 7,283,458,410.79/98,761.76
  6. Step 6: Final answer
    x = 73,747.76

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1.5x scale

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.