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Finding the Fourth Proportional to 61,632.08, 85,046 and 35,781.68

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Solution

The fourth proportional to 61,632.08, 85,046 and 35,781.68 is: 49,375.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,632.08 : 85,046 = 35,781.68 : x
  2. Step 2: Convert to fraction form
    61,632.08/85,046 = 35,781.68/x
  3. Step 3: Cross multiply
    61,632.08x = 85,046 × 35,781.68
  4. Step 4: Simplify right side
    61,632.08x = 3,043,088,757.28
  5. Step 5: Solve for x
    x = 3,043,088,757.28/61,632.08
  6. Step 6: Final answer
    x = 49,375.08

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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.