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Finding the Fourth Proportional to 104,102.59, 143,661.55 and 56,355.90

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Solution

The fourth proportional to 104,102.59, 143,661.55 and 56,355.90 is: 77,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,102.59 : 143,661.55 = 56,355.90 : x
  2. Step 2: Convert to fraction form
    104,102.59/143,661.55 = 56,355.90/x
  3. Step 3: Cross multiply
    104,102.59x = 143,661.55 × 56,355.90
  4. Step 4: Simplify right side
    104,102.59x = 8,096,175,945.65
  5. Step 5: Solve for x
    x = 8,096,175,945.65/104,102.59
  6. Step 6: Final answer
    x = 77,771.13

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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.