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Finding the Fourth Proportional to 113,040.48, 155,996.64 and 62,739.48

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Solution

The fourth proportional to 113,040.48, 155,996.64 and 62,739.48 is: 86,580.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,040.48 : 155,996.64 = 62,739.48 : x
  2. Step 2: Convert to fraction form
    113,040.48/155,996.64 = 62,739.48/x
  3. Step 3: Cross multiply
    113,040.48x = 155,996.64 × 62,739.48
  4. Step 4: Simplify right side
    113,040.48x = 9,787,148,075.35
  5. Step 5: Solve for x
    x = 9,787,148,075.35/113,040.48
  6. Step 6: Final answer
    x = 86,580.91

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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.