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Finding the Fourth Proportional to 113,292, 156,342.96 and 62,991

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Solution

The fourth proportional to 113,292, 156,342.96 and 62,991 is: 86,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,292 : 156,342.96 = 62,991 : x
  2. Step 2: Convert to fraction form
    113,292/156,342.96 = 62,991/x
  3. Step 3: Cross multiply
    113,292x = 156,342.96 × 62,991
  4. Step 4: Simplify right side
    113,292x = 9,848,199,393.36
  5. Step 5: Solve for x
    x = 9,848,199,393.36/113,292
  6. Step 6: Final answer
    x = 86,927.58

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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.