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Finding the Fourth Proportional to 104,042.88, 143,578.14 and 56,295.18

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Solution

The fourth proportional to 104,042.88, 143,578.14 and 56,295.18 is: 77,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,042.88 : 143,578.14 = 56,295.18 : x
  2. Step 2: Convert to fraction form
    104,042.88/143,578.14 = 56,295.18/x
  3. Step 3: Cross multiply
    104,042.88x = 143,578.14 × 56,295.18
  4. Step 4: Simplify right side
    104,042.88x = 8,082,757,235.37
  5. Step 5: Solve for x
    x = 8,082,757,235.37/104,042.88
  6. Step 6: Final answer
    x = 77,686.79

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1.5x scale

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.