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Finding the Fourth Proportional to 65,343.58, 90,172.95 and 36,663.77

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Solution

The fourth proportional to 65,343.58, 90,172.95 and 36,663.77 is: 50,595.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,343.58 : 90,172.95 = 36,663.77 : x
  2. Step 2: Convert to fraction form
    65,343.58/90,172.95 = 36,663.77/x
  3. Step 3: Cross multiply
    65,343.58x = 90,172.95 × 36,663.77
  4. Step 4: Simplify right side
    65,343.58x = 3,306,080,299.02
  5. Step 5: Solve for x
    x = 3,306,080,299.02/65,343.58
  6. Step 6: Final answer
    x = 50,595.33

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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.