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Finding the Fourth Proportional to 61,294.40, 84,558.48 and 38,617.64

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Solution

The fourth proportional to 61,294.40, 84,558.48 and 38,617.64 is: 53,274.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,294.40 : 84,558.48 = 38,617.64 : x
  2. Step 2: Convert to fraction form
    61,294.40/84,558.48 = 38,617.64/x
  3. Step 3: Cross multiply
    61,294.40x = 84,558.48 × 38,617.64
  4. Step 4: Simplify right side
    61,294.40x = 3,265,448,939.59
  5. Step 5: Solve for x
    x = 3,265,448,939.59/61,294.40
  6. Step 6: Final answer
    x = 53,274.83

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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.