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Finding the Fourth Proportional to 104,616.22, 144,370.56 and 56,869.42

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Solution

The fourth proportional to 104,616.22, 144,370.56 and 56,869.42 is: 78,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,616.22 : 144,370.56 = 56,869.42 : x
  2. Step 2: Convert to fraction form
    104,616.22/144,370.56 = 56,869.42/x
  3. Step 3: Cross multiply
    104,616.22x = 144,370.56 × 56,869.42
  4. Step 4: Simplify right side
    104,616.22x = 8,210,270,012.28
  5. Step 5: Solve for x
    x = 8,210,270,012.28/104,616.22
  6. Step 6: Final answer
    x = 78,479.90

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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.