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Finding the Fourth Proportional to 104,429.94, 144,113.49 and 56,683.28

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Solution

The fourth proportional to 104,429.94, 144,113.49 and 56,683.28 is: 78,223.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,429.94 : 144,113.49 = 56,683.28 : x
  2. Step 2: Convert to fraction form
    104,429.94/144,113.49 = 56,683.28/x
  3. Step 3: Cross multiply
    104,429.94x = 144,113.49 × 56,683.28
  4. Step 4: Simplify right side
    104,429.94x = 8,168,824,584.88
  5. Step 5: Solve for x
    x = 8,168,824,584.88/104,429.94
  6. Step 6: Final answer
    x = 78,223.01

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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.