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Finding the Fourth Proportional to 104,618.71, 144,373.96 and 56,872.06

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Solution

The fourth proportional to 104,618.71, 144,373.96 and 56,872.06 is: 78,483.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,618.71 : 144,373.96 = 56,872.06 : x
  2. Step 2: Convert to fraction form
    104,618.71/144,373.96 = 56,872.06/x
  3. Step 3: Cross multiply
    104,618.71x = 144,373.96 × 56,872.06
  4. Step 4: Simplify right side
    104,618.71x = 8,210,844,515.56
  5. Step 5: Solve for x
    x = 8,210,844,515.56/104,618.71
  6. Step 6: Final answer
    x = 78,483.52

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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.