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Finding the Fourth Proportional to 61,354.88, 84,633.60 and 38,653.82

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Solution

The fourth proportional to 61,354.88, 84,633.60 and 38,653.82 is: 53,319.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,354.88 : 84,633.60 = 38,653.82 : x
  2. Step 2: Convert to fraction form
    61,354.88/84,633.60 = 38,653.82/x
  3. Step 3: Cross multiply
    61,354.88x = 84,633.60 × 38,653.82
  4. Step 4: Simplify right side
    61,354.88x = 3,271,411,940.35
  5. Step 5: Solve for x
    x = 3,271,411,940.35/61,354.88
  6. Step 6: Final answer
    x = 53,319.51

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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.