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Finding the Fourth Proportional to 61,684.84, 85,125.18 and 33,390.64

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Solution

The fourth proportional to 61,684.84, 85,125.18 and 33,390.64 is: 46,079.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,684.84 : 85,125.18 = 33,390.64 : x
  2. Step 2: Convert to fraction form
    61,684.84/85,125.18 = 33,390.64/x
  3. Step 3: Cross multiply
    61,684.84x = 85,125.18 × 33,390.64
  4. Step 4: Simplify right side
    61,684.84x = 2,842,384,240.32
  5. Step 5: Solve for x
    x = 2,842,384,240.32/61,684.84
  6. Step 6: Final answer
    x = 46,079.14

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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.