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Finding the Fourth Proportional to 61,620.80, 85,036.64 and 33,326.42

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Solution

The fourth proportional to 61,620.80, 85,036.64 and 33,326.42 is: 45,990.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,620.80 : 85,036.64 = 33,326.42 : x
  2. Step 2: Convert to fraction form
    61,620.80/85,036.64 = 33,326.42/x
  3. Step 3: Cross multiply
    61,620.80x = 85,036.64 × 33,326.42
  4. Step 4: Simplify right side
    61,620.80x = 2,833,966,188.21
  5. Step 5: Solve for x
    x = 2,833,966,188.21/61,620.80
  6. Step 6: Final answer
    x = 45,990.42

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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.