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Finding the Fourth Proportional to 61,145.96, 84,382.36 and 33,921.86

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Solution

The fourth proportional to 61,145.96, 84,382.36 and 33,921.86 is: 46,812.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,145.96 : 84,382.36 = 33,921.86 : x
  2. Step 2: Convert to fraction form
    61,145.96/84,382.36 = 33,921.86/x
  3. Step 3: Cross multiply
    61,145.96x = 84,382.36 × 33,921.86
  4. Step 4: Simplify right side
    61,145.96x = 2,862,406,602.39
  5. Step 5: Solve for x
    x = 2,862,406,602.39/61,145.96
  6. Step 6: Final answer
    x = 46,812.69

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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.