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Finding the Fourth Proportional to 98,757.65, 136,303.30 and 55,750.25

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Solution

The fourth proportional to 98,757.65, 136,303.30 and 55,750.25 is: 76,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,757.65 : 136,303.30 = 55,750.25 : x
  2. Step 2: Convert to fraction form
    98,757.65/136,303.30 = 55,750.25/x
  3. Step 3: Cross multiply
    98,757.65x = 136,303.30 × 55,750.25
  4. Step 4: Simplify right side
    98,757.65x = 7,598,943,461.27
  5. Step 5: Solve for x
    x = 7,598,943,461.27/98,757.65
  6. Step 6: Final answer
    x = 76,945.36

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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.