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Finding the Fourth Proportional to 112,395.44, 155,101.11 and 61,409.93

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Solution

The fourth proportional to 112,395.44, 155,101.11 and 61,409.93 is: 84,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,395.44 : 155,101.11 = 61,409.93 : x
  2. Step 2: Convert to fraction form
    112,395.44/155,101.11 = 61,409.93/x
  3. Step 3: Cross multiply
    112,395.44x = 155,101.11 × 61,409.93
  4. Step 4: Simplify right side
    112,395.44x = 9,524,748,308.02
  5. Step 5: Solve for x
    x = 9,524,748,308.02/112,395.44
  6. Step 6: Final answer
    x = 84,743.20

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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.