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Finding the Fourth Proportional to 104,365.28, 144,023.28 and 56,618.48

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Solution

The fourth proportional to 104,365.28, 144,023.28 and 56,618.48 is: 78,133.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,365.28 : 144,023.28 = 56,618.48 : x
  2. Step 2: Convert to fraction form
    104,365.28/144,023.28 = 56,618.48/x
  3. Step 3: Cross multiply
    104,365.28x = 144,023.28 × 56,618.48
  4. Step 4: Simplify right side
    104,365.28x = 8,154,379,198.21
  5. Step 5: Solve for x
    x = 8,154,379,198.21/104,365.28
  6. Step 6: Final answer
    x = 78,133.06

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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.