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Finding the Fourth Proportional to 54,315.70, 81,473.55 and 39,346.90

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Solution

The fourth proportional to 54,315.70, 81,473.55 and 39,346.90 is: 59,020.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,315.70 : 81,473.55 = 39,346.90 : x
  2. Step 2: Convert to fraction form
    54,315.70/81,473.55 = 39,346.90/x
  3. Step 3: Cross multiply
    54,315.70x = 81,473.55 × 39,346.90
  4. Step 4: Simplify right side
    54,315.70x = 3,205,731,624.50
  5. Step 5: Solve for x
    x = 3,205,731,624.50/54,315.70
  6. Step 6: Final answer
    x = 59,020.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.