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Finding the Fourth Proportional to 61,284.88, 84,548.64 and 38,617.84

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Solution

The fourth proportional to 61,284.88, 84,548.64 and 38,617.84 is: 53,277.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,284.88 : 84,548.64 = 38,617.84 : x
  2. Step 2: Convert to fraction form
    61,284.88/84,548.64 = 38,617.84/x
  3. Step 3: Cross multiply
    61,284.88x = 84,548.64 × 38,617.84
  4. Step 4: Simplify right side
    61,284.88x = 3,265,085,851.74
  5. Step 5: Solve for x
    x = 3,265,085,851.74/61,284.88
  6. Step 6: Final answer
    x = 53,277.18

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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.