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Finding the Fourth Proportional to 104,658.56, 144,431.55 and 56,914.70

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Solution

The fourth proportional to 104,658.56, 144,431.55 and 56,914.70 is: 78,543.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,658.56 : 144,431.55 = 56,914.70 : x
  2. Step 2: Convert to fraction form
    104,658.56/144,431.55 = 56,914.70/x
  3. Step 3: Cross multiply
    104,658.56x = 144,431.55 × 56,914.70
  4. Step 4: Simplify right side
    104,658.56x = 8,220,278,338.79
  5. Step 5: Solve for x
    x = 8,220,278,338.79/104,658.56
  6. Step 6: Final answer
    x = 78,543.77

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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.