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Finding the Fourth Proportional to 98,760.53, 136,288.51 and 53,437.51

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Solution

The fourth proportional to 98,760.53, 136,288.51 and 53,437.51 is: 73,743.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,760.53 : 136,288.51 = 53,437.51 : x
  2. Step 2: Convert to fraction form
    98,760.53/136,288.51 = 53,437.51/x
  3. Step 3: Cross multiply
    98,760.53x = 136,288.51 × 53,437.51
  4. Step 4: Simplify right side
    98,760.53x = 7,282,919,261.53
  5. Step 5: Solve for x
    x = 7,282,919,261.53/98,760.53
  6. Step 6: Final answer
    x = 73,743.22

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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.