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Finding the Fourth Proportional to 86,506.60, 129,713.65 and 44,369.48

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Solution

The fourth proportional to 86,506.60, 129,713.65 and 44,369.48 is: 66,530.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,506.60 : 129,713.65 = 44,369.48 : x
  2. Step 2: Convert to fraction form
    86,506.60/129,713.65 = 44,369.48/x
  3. Step 3: Cross multiply
    86,506.60x = 129,713.65 × 44,369.48
  4. Step 4: Simplify right side
    86,506.60x = 5,755,327,199.40
  5. Step 5: Solve for x
    x = 5,755,327,199.40/86,506.60
  6. Step 6: Final answer
    x = 66,530.50

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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.