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Finding the Fourth Proportional to 65,185.81, 89,948.98 and 36,501.48

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Solution

The fourth proportional to 65,185.81, 89,948.98 and 36,501.48 is: 50,367.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,185.81 : 89,948.98 = 36,501.48 : x
  2. Step 2: Convert to fraction form
    65,185.81/89,948.98 = 36,501.48/x
  3. Step 3: Cross multiply
    65,185.81x = 89,948.98 × 36,501.48
  4. Step 4: Simplify right side
    65,185.81x = 3,283,270,645.17
  5. Step 5: Solve for x
    x = 3,283,270,645.17/65,185.81
  6. Step 6: Final answer
    x = 50,367.88

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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.