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Finding the Fourth Proportional to 86,531.96, 119,415.48 and 48,806.96

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Solution

The fourth proportional to 86,531.96, 119,415.48 and 48,806.96 is: 67,354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,531.96 : 119,415.48 = 48,806.96 : x
  2. Step 2: Convert to fraction form
    86,531.96/119,415.48 = 48,806.96/x
  3. Step 3: Cross multiply
    86,531.96x = 119,415.48 × 48,806.96
  4. Step 4: Simplify right side
    86,531.96x = 5,828,306,555.74
  5. Step 5: Solve for x
    x = 5,828,306,555.74/86,531.96
  6. Step 6: Final answer
    x = 67,354.38

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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.