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Finding the Fourth Proportional to 113,130, 156,122.64 and 62,832.24

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Solution

The fourth proportional to 113,130, 156,122.64 and 62,832.24 is: 86,710.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,130 : 156,122.64 = 62,832.24 : x
  2. Step 2: Convert to fraction form
    113,130/156,122.64 = 62,832.24/x
  3. Step 3: Cross multiply
    113,130x = 156,122.64 × 62,832.24
  4. Step 4: Simplify right side
    113,130x = 9,809,535,185.91
  5. Step 5: Solve for x
    x = 9,809,535,185.91/113,130
  6. Step 6: Final answer
    x = 86,710.29

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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.