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Finding the Fourth Proportional to 115,262.28, 172,773.54 and 48,646.80

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Solution

The fourth proportional to 115,262.28, 172,773.54 and 48,646.80 is: 72,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,262.28 : 172,773.54 = 48,646.80 : x
  2. Step 2: Convert to fraction form
    115,262.28/172,773.54 = 48,646.80/x
  3. Step 3: Cross multiply
    115,262.28x = 172,773.54 × 48,646.80
  4. Step 4: Simplify right side
    115,262.28x = 8,404,879,845.67
  5. Step 5: Solve for x
    x = 8,404,879,845.67/115,262.28
  6. Step 6: Final answer
    x = 72,919.60

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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.