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Finding the Fourth Proportional to 61,654.37, 85,078.13 and 37,777.77

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Solution

The fourth proportional to 61,654.37, 85,078.13 and 37,777.77 is: 52,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,654.37 : 85,078.13 = 37,777.77 : x
  2. Step 2: Convert to fraction form
    61,654.37/85,078.13 = 37,777.77/x
  3. Step 3: Cross multiply
    61,654.37x = 85,078.13 × 37,777.77
  4. Step 4: Simplify right side
    61,654.37x = 3,214,061,838.28
  5. Step 5: Solve for x
    x = 3,214,061,838.28/61,654.37
  6. Step 6: Final answer
    x = 52,130.32

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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.