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Finding the Fourth Proportional to 112,919.17, 169,231.11 and 46,281.28

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Solution

The fourth proportional to 112,919.17, 169,231.11 and 46,281.28 is: 69,361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,919.17 : 169,231.11 = 46,281.28 : x
  2. Step 2: Convert to fraction form
    112,919.17/169,231.11 = 46,281.28/x
  3. Step 3: Cross multiply
    112,919.17x = 169,231.11 × 46,281.28
  4. Step 4: Simplify right side
    112,919.17x = 7,832,232,386.62
  5. Step 5: Solve for x
    x = 7,832,232,386.62/112,919.17
  6. Step 6: Final answer
    x = 69,361.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.