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Finding the Fourth Proportional to 65,495.92, 90,384.37 and 35,687.92

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Solution

The fourth proportional to 65,495.92, 90,384.37 and 35,687.92 is: 49,249.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,495.92 : 90,384.37 = 35,687.92 : x
  2. Step 2: Convert to fraction form
    65,495.92/90,384.37 = 35,687.92/x
  3. Step 3: Cross multiply
    65,495.92x = 90,384.37 × 35,687.92
  4. Step 4: Simplify right side
    65,495.92x = 3,225,630,165.81
  5. Step 5: Solve for x
    x = 3,225,630,165.81/65,495.92
  6. Step 6: Final answer
    x = 49,249.33

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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.