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Finding the Fourth Proportional to 101,786.65, 140,466.42 and 56,467.60

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Solution

The fourth proportional to 101,786.65, 140,466.42 and 56,467.60 is: 77,925.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,786.65 : 140,466.42 = 56,467.60 : x
  2. Step 2: Convert to fraction form
    101,786.65/140,466.42 = 56,467.60/x
  3. Step 3: Cross multiply
    101,786.65x = 140,466.42 × 56,467.60
  4. Step 4: Simplify right side
    101,786.65x = 7,931,801,617.99
  5. Step 5: Solve for x
    x = 7,931,801,617.99/101,786.65
  6. Step 6: Final answer
    x = 77,925.76

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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.